Wednesday, September 27, 2017

Agroforestry in Croatia



Croatian Center of Renewable Energy Sources (CCRES) is a non-governmental organization registered and working in Croatia in the field of renewable energy, agroforestry, reforestation, and sustainable land uses. The organization started working at the CCRES Research facility in the year 2013 and has been involved with giving farmers free seeds, training farmers and the community at large on more about agroforestry techniques, and environmental conservation awareness. CCRES has been able to facilitate the planting of trees in forest lands, community farms, schools, waterlines, and private lands. Some of the benefits the farmers have been able to acquire from the organization include; free seeds, free training manuals in agroforestry, workshops in agroforestry, and sustainable land uses. 







Agroforestry takes advantage of the interactive benefits of combining trees and shrubs with crops and/or livestock.
Several types of agroforestry:
*Forest Farming: the intentional cultivation of non-timber forest crops underneath the established canopy of an existing forest.
*Forest Gardening: mimicking the structure and function of forests in the way we garden, or using the forest as a model for the way we garden.
*Silvopasture: grazing animals under a forest canopy of about 50% cover, so that grasses can persist
*Riparian Buffers: tree crop systems in waterways like streams, rivers, wetlands, etc.
*Windbreaks: tree crop systems to buffer effects of wind
*Alley Cropping: rows of trees in between conventional crops, like Black Walnuts in-between rows of corn or soybeans



Agrošumarstvo se uglavnom sastoji od miješanja sadnje stabala sa sadnjom usjeva i/ili uzgojem stoke. To omogućuje bolju iskorištenost resursa, pomaže povećanju bioraznolikosti i može povećati prinose.

U sklopu Hrvatskog Centra Obnovljivih Izvora Energije (HCOIE), objavili smo svoje nove planove za razvoj ekološki održivih šumarskih praksi diljem Hrvatske. Ovi projekti imaju za cilj smanjiti negativan utjecaj na okoliš te integrirati prakse upravljanja šumama u agroekologiju.



Agrošumarstvo se uglavnom sastoji od miješanja sadnje stabala sa sadnjom usjeva i/ili uzgojem stoke. To omogućuje bolju iskorištenost resursa, pomaže povećanju bioraznolikosti i u konačnici povećava prinose. Studija HCOIE pokazala je da parcela od 100 ha pod agrošumarskim praksama daje ekvivalent od 136 ha pod standardnim principima korištenja, dajući tako potencijalni ekonomski rast za proizvođače koje takve prakse usvoje.




Koncept ima velik broj prednosti po pitanjima uzgoja usjeva i zaštite okoliša. U principu, drveće kroz svoje korijenje stvara uvjete u tlu koji potiču bolju apsorpciju vode i minerala usjevima na površini. Agrošumarske tehnike potiču strateško pozicioniranje stabala kako bi se maksimiziralo povećanje prinosa. Dodatno, stabla pomažu u diverzifikaciji proizvodnje, ograničenju gubitaka nitrata iz tla te onečišćenju podzemnih voda.



Plodnost tla također se poboljšava padom jesenskog lišća i njegovom razgradnjom na tlu, stvarajući tako važan izvor prirodnog komposta i gnojiva okolnim kulturama. Drveće i živice na poljima povećavaju bioraznolikost, što je pogodno kukcima za oprašivanje. Konačno, stabla igraju važnu ulogu u apsorpciji CO2 i spremanju ugljika tijekom faze rasta, smanjujući tako učinak klimatskih promjena.



Agrošumarstvo tako postaje ključni igrač u agroekološkom planu HCOIE. Zbog svih ovih prednosti, promocija i širenje korištenja agrošumarstva postali su nam jedan od glavnih ciljeva u borbi protiv klimatskih promjena. Plan otkriva naše konkretne prijedloge za njegovu promociju u širokim kategorijama s brojnim specifičnim aktivnostima u svakoj od njih.





Kategorije uspostavljaju sustav za istraživanje i praćenje različitih oblika agrošumarstva koji se provode u Hrvatskoj, te uspostavljaju mreže za razmjenu informacija između različitih sudionika u agrošumarstvu. Povećanje informacija o tome što se radi u agrošumarstvu omogućit će širenje inovativnih ideja koje su u budućnosti primjenjive.



Još jedan veliki prostor na koji se odnosi plan jest poboljšanje regulatornog, pravnog i financijskog okvira koji okružuje agrošumarstvo. Neke od specifičnih aktivnosti uključuju osnaživanje financijske potpore za agrošumarstvo, poboljšanje dostupnosti alata za različite sudionike na regionalnom nivou te favoriziranje razvoja agrošumarstva kroz financijske alate.






Obrazovanje je još jedna važna komponenta plana, kako u poljoprivrednim školama, tako i u pružanju obuke već postojećim poljoprivrednicima o prednostima agrošumarstva i kako prijeći na njega. Dodatno, plan postavlja sustav pomoći kako bi se podigla vrijednost proizvedenih kultura koristeći agrošumarstvo te strategiju promocije agrošumarstva na međunarodnoj razini.



Široko korištenje agrošumarstva moglo bi imati veliku ulogu u prelasku na održive okolišne prakse u dugoročnom razdoblju, a također bi pomoglo i proizvođačima na ekonomskom nivou u povećanju prinosa, te korištenje biomase drveta, kroz malčiranje, kao prirodno gnojivo za usjeve. Predstavljeni plan trebao bi svoju primjenu naći na nacionalnom, ali i na međunarodnom nivou.





Field windbreaks

Wind protection is a long-standing indigenous practice in traditional agriculture of many regions. In attempts to improve or establish wind protection schemes with trees, it makes sense to study the link which can be observed between traditional and relatively recent but promising agroforestry practices. And it makes sense as well to try to quantify phenomena taking place in such traditional and promising practices alike.


In the case study in Croatia reported here, the farmer requested CCRES to assist in providing the agrometeorological input into the set-up of experiments under conditions in farmers' fields, with a system of wind barriers with trees, in irrigated crops in Lika Region.
The choice to use multiple tree breaks appears justified by the increase in roughness over a larger area in addition to separate windbreak effects, and by the multipurpose use of trees and their products which is economically possible. In larger-scale agriculture, where irrigated cash and food crops have to be protected against very strong winds, relatively narrow rows of trees are to be preferred above wider belts as an intercrop or scattered trees or bushes.
As mentioned earlier, where mechanical damage from strong winds is the primary limiting factor, the agronomist member of the team should pay primary attention to phenology, growth and yield parameters, and visual or even microscopic observations of actual mechanical damage. This will make it possible to observe differences between unprotected crops and protected ones at different distances from belts.


Whether in strip cropping, in using narrow tree rows, or in mixed experiments, cost/benefit ratio determinations are absolutely necessary to understand the proper gain from the multipurpose role of trees and from yield (quality) increases due to the trees or crops applied for protection from wind.

Zeljko Serdar, Croatian Center of Renewable Energy Sources (CCRES)

Tuesday, September 5, 2017

Take control of your energy consumption



Take control of your energy consumption

The Powerwall is a home battery system that turns your home’s solar panels into an all day resource – increasing self-consumption of solar – while also offering backup in the event of an outage. The Powerwall enables more of your home’s electricity use to come from solar, which enhances solar functionality, and reduces energy costs.
When solar panels produce more power than a home needs, the excess solar is sent back to the grid. The Powerwall enables a homeowner instead to capture and store excess solar power produced during the day for use at night. The result is greater self-consumption of your solar generation and reduced energy costs.

Tesla is far from the only company looking to profit off of rechargeable batteries for the home.

At-home batteries are a necessary purchase for anyone looking to convert their home to solar power. The batteries store the electricity generated by solar panels, which can then be used at night or during peak grid times to save money on your electricity bill.

But the batteries can also be used to charge electric vehicles, which is why many automakers are now selling their own units.

Scroll down to see the 10 at-home batteries looking to take on Tesla's Powerwall 2:

First, some information on Tesla's Powerwall 2 — a 264-pound, lithium-ion battery that you can mount on your wall. Panasonic makes the cells for the battery, while Tesla builds the battery module and pack.

A single Powerwall unit stores 14 kWh of energy, but you can link up to 10 batteries side-by-side to increase storage. A single unit, including installation, can cost as much as $11,450.

POWERWALL 2 SPECIFICATIONS

Technology
Wall mounted, rechargeable lithium ion battery with liquid thermal control.

Model 2
13.2 kWh – For daily cycle applications

Warranty
10 years

Supported Applications
Solar self-consumption, Time of use load shifting, BackUp

Power
7kW peak / 5kW continuous

Scalable
Up to 9 Powerwalls

Dimensions
1150mm x 755mm x 155mm

Installation
Floor or wall mounted
Indoor or outdoor

Operating Temperature
-20°C to 50°C

Use more of your solar
Instead of sending excess solar energy into the grid, Powerwall stores it for use any time.

Weight
110kg

Always connected
Monitor your solar energy use in real-time and receive alerts when Powerwall is preparing for cloudy or severe weather.

All in one inverter
Powerwall uses an internal inverter to convert DC energy to the AC energy required for your home, lowering cost and complexity.

Depth of Discharge
100%

Tesla has offered battery and solar installations as one process ever since it acquired SolarCity last November. Tesla is now selling solar roof shingles that are designed to look like an actual roof to compete with rival solar installers, like Sunrun and Vivint, on an aesthetic level.

1. LG Chem's RESU battery is probably Tesla's closest competitor in the space. Last October, LG Chem partnered with solar company Sunrun to bring its battery option to the US.

The RESU is now available to Sunrun customers and its products distribution arm — a similar strategy to making the Powerwall available to SolarCity customers. It stores up to 9.8 kWh of energy and starts at around $4,000 for lower-voltage options.

2. Mercedes also has the potential to rival Tesla's home battery business. The company announced Thursday it will partner with Vivint to sell its home battery in California.

The German automaker is following Tesla and LG Chem by partnering with a solar company to combine the battery and solar installation processes. Mercedes' battery stores 2.5 kWh of energy, but units can be combined to store 20 kWh. The biggest storage option costs $13,000, installation included.

3. Nissan offers a rechargeable battery option, called XStorage, which holds 4.2 kWh of energy storage. The automaker began selling the XStorage in May in the United Kingdom, where Tesla and Mercedes also sell their battery options.

Nissan's xStorage battery costs $4,500, which includes the price of installation. Nissan is looking to set itself apart as a sustainable battery provider by using old battery cells in the units.

4. BMW plans to sell two battery options that can store a whopping 22 kWh and 33 kWh worth of energy, but they have yet to launch. Like Nissan, BMW will take a sustainable approach by reusing batteries from its BMW i3 series.

5. Sonnen, a German company, sells several at-home battery options with up to 16 kWh of storage. The eco compact version pictured here holds 4 kWh of energy and costs $5,950. It comes with the inverter included.

The company derives two-thirds of its revenue from its German operations, but is looking to expand abroad. Sonnen opened a factory in Atlanta in April to begin production for the US market. It also has plans to expand to Australia, the United Kingdom, and Italy.

6. SimpliPhi Power is an at-home battery maker that's been around since 2002, but its original name was LibertyPak Company. SimpliPhi offers several battery options, the largest of which stores 3.4 kWh of energy.

SimpliPhi's batteries can be combined to make a battery pack as large as you need. The company recently partnered with solar installer CivicSolar to provide a comprehensive energy system.

7. Sunverge offers battery systems providing anywhere from 7.7 kWh to 19.4 kWh of energy storage. Weighing around 500 pounds, the battery has to be installed by a trained Sunverge specialist.

Sunverge comes with a corresponding app so you can monitor your solar energy storage and see electric grid costs at different times. A Sunverge unit can cost between $8,000 and $20,000, depending on the size you get.

8. Powervault is an at-home battery system that is sold in the UK. All units come with an inverter included, and the most powerful model stores 6 kWh of energy. Prices start at roughly $3,000.

9. Palo Alto-based ElectrIQ sells a battery for US homes that stores 10 kWh of energy. Its retail price is about $16,000 and includes the price of an inverter.

10. Panasonic, which makes the cells for Tesla's home battery, also has its own unit that can store 8 kWh of energy. It's currently available in Australia.

Panasonic's battery weighs about 185 pounds, but the cost of a unit is not made readily available.

Without generous private donations the CROATIAN CENTER of RENEWABLE ENERGY SOURCES would be unable to continue the valuable work it does in bringing objective information to an often overheated debate.


Making a donation is simple: a cheque payable to CROATIAN CENTER of RENEWABLE ENERGY SOURCES can be posted to the following address:


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Medarska 24,

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CROATIA


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CROATIAN CENTER of RENEWABLE ENERGY SOURCES

BANK ACCOUNT 2484008-1105745975

IBAN HR0324840081105745975

SWIFT RZBHHR2X

Saturday, August 5, 2017

Yarrow / Stolisnik


Stolisnik

-Achillea millefoltum L. 

Obitelj: Asteraceae  

Nadzemni dio biljke stolisnika - Millefolii herba 
Cvijet stolisnika - Millefolii flos 
Eterično ulje stolisnika - Millefolii aetheroleum. 

Naziv ove biljke potječe od imena mitskog junaka Ahila i "mile folium", što znači tisuću listova. 
Stolisnik je rasprostranjen u cijelom svijetu. Raste i u nizinskim i u planinskim područjima. 

Morfološke i fiziološke značajke
Stolisnik je višegodišnja zeljasta biljka. Korijenov sustav sastoji se od pužućeg rizoma s brojnim sitnim žilicama. Stabljike su ravne, najčešće slabo razgranate, visine do 80 cm. 

Listovi su izduženi, dvostruko i trostruko podijeljeni. Režnjevi su šiljasti i gusto zbijeni.



Cvjetovi su složeni i skupljeni u vodoravne cvatove. Obodni cvjetovi su bijele, a vrlo rijetko i ružičaste boje. U sredini cvijeta nalaze se plodni cvjetići. Sjeme je sitno, ovalnog oblika, sive boje. Masa 1000 zrna je 0,10 - 0,15 g. Zrelo sjeme je dobre klijavosti i klija odmah nakon berbe. Nakon dozrijevanja 

sjemena cvjetonosne stabljike se suše. a biljke prezimljavaju u obliku rozete. Stolisnik dobro podnosi niske temperature kao i ljetne vrućine i suše. Cijela biljka je žilava i formira čvrst i gust busen. 

Kemijski sastav i upotreba 
Stolisnik sadrži 0,2 - 1,2 % eteričnog ulja. U ulju tetraploidnog stolisnika ima 30 - 50 %. azulena. nešto cineola. kamfora. sabinena, pinena i drugih tvari. Biljka također sadrži flavonoide, alkaloide (ahilein), tanine, organske kiseline i krom. koji je važan za sintezu inulina. 

Stolisnik je gorka aromatična biljka koja se koristi za poboljšanje probave kao i za stimuliranje lučenja žuči. Koristi se i za izbacivanje žučnih i bubrežnih kamenaca. Može se koristiti i za vanjsku upotrebu u obliku kupki, obloga ili ekstrakata za liječenje kožnih oboljenja, hemeroida itd. Eterično se ulje koristi u kozmetičkoj i farmaceutskoj industriji. 

Uvjeti uzgoja 
Klima - Stolisnik treba uzgajati na sunčanim površinama jer nema velikih potreba za vlagom. 

Tlo - Stolisnik se može uzgajati na svim tipovima obradivih tala, neutralne do slabo kisele reakcije. Najbolje uspijeva na dubokim tlima dobrih fizikalnih i kemijskih značajki, ali treba izbjegavati tla bogata dušikom. 

Uzgoj 
Plodored - Stolisnik se kao višegodišnja kultura ne uzgaja u plodoredu. Najbolje ga je saditi iza kultura koje ostavljaju tlo čisto od korova. Leguminoze nisu dobre pretkulture. 

Obrada tla - Za razliku od mnogih kultura, stolisnik ne zahtijeva duboku obradu tla. Oranje treba obaviti na dubinu od 20 do 25 cm. 

Gnojidba - Za osnovnu se gnojidbu upotrebljavaju mineralna NPK gnojiva s povećanim sadržajem fosfora koji potiče razvoj cvatova. 
Gnojidba se obavlja tijekom predsjetvene pripreme tla. Ovisno o plodnosti tla primjenjuje se 200 - 300 kg/ha gnojiva. Mineralna gnojiva treba primjenjivati tijekom cijelog uzgojnog razdoblja i to krajem godine, nakon vegetacije ili u rano proljeće, prije početka vegetacije. U organskoj se poljoprivredi primjenjuje stajski gnoj i druga dozvoljena gnojiva koja sadrže fosfor i kalij. 

Razmnožavanje - Stolisnik se razmnožava direktnom sjetvom sjemena u polje ili preko presadnica. Direktna sjetva sjemena obavlja se sijačicama u redove na razmaku od 50 do 60 cm. Sjeme se sije u brazde, bez naknadnog pokrivanja. Nakon sjetve površinu treba povaljati glatkim valjkom. Sjetva se obavlja krajem kolovoza ili početkom rujna. Sjeme klija za 10 - 15 dana. pa su do zime biljke dovoljno razvijene da mogu prezimiti. Sjetva se može obavili i u proljeće, tijekom ožujka ili najkasnije do polovice travnja. Za sjetvu na razmaku između redova od 50 - 60 cm potrebno je 300 g sjemena uz uvjet da se sije 50 zrna po m². 

Za jesensku je sjetvu potrebno 1 - 2 kg/ha sjemena. Sjeme treba miješali s nekim inertnim materijalom - nosačem (pijesak ili sl.). 
Čistoća sjemena za sjetvu treba biti 90 %, a klijavost najmanje 80 %. Ako se stolisnik razmnožava preko presadnica, sjetva sjemena u hladne lijehe obavlja se u drugoj polovici lipnja. U tom su slučaju biljke spremne za presađivanje krajem listopada. Presadnice se sade na dobro poravnatu i usitnjenu površinu u brazde duboke 5 - 8 cm na razmaku između redova od 50 do 60 cm. Nakon sadnje presadnice se prekriju zemljom i dobro pritisnu. Za površinu od 1 ha potrebno je 66 600- 80 000 biljaka. 





Njega
Stolisnik nije zahtjevna biljka, ali najveći se prinosi postižu na rastresitim površinama čistim od korova. To je posebno važno za mlade biljke u prvoj godini uzgoja. Nasade na siromašnim tlima treba prihraniti mineralnim dušičnim gnojivom. 
Međuredno okopavanje i kultiviranje obično se obavlja 2 -3 puta. a po potrebi i više. 
Prihranjivanje se obavlja u rano proljeće, najčešće tijekom travnja s dušičnim gnojivom (KAN) u količini od 100 do 150 kg/ha. Nakon završetka prve ili na početku sljedeće vegetacije treba primijeniti 100 - 200 kg/ha mineralnog NPK gnojiva. 

Berba
Od stolisnika se koristi cvijet sa stabljikom dužine do 25 cm (herba) ili samo cvijet. Stolisnik se bere u fazi punog cvjetanja. Berba se obavlja strojno, a na manjim površinama ručno. Prva godina uzgoja daje samo jednu berbu i to lijekom lipnja. Višegodišnji nasadi daju dvije berbe, prvu tijekom lipnja, a drugu tijekom kolovoza ili rujna. 

Sušenje
Stolisnik se može sušiti prirodnim putem ili u sušnicama na temperaturi od 40 do 60 °C. Za 1 kg suhih nadzemnih dijelova biljke potrebno je 3,5 - 4,0 kg svježih. 

Prinos
U prvoj godini uzgoja prinos suhih nadzemnih dijelova biljke je 1500 
- 2500 kg/ha. a sljedećih godina i do 6000 kg/ha. Prinos cvijeta u prvoj godini je do 1000 kg/ha, a sljedećih i do 3000 kg/ha. 

Standardi kvalitete za herbu stolisnika (Millefolii hb.) prema Ph. Eur. 5. 
- eterično ulje min. 2 ml/kg (s.t.) 
- strane tvari: 
- dijelovi stabljike promjera većeg od 3 mm max. 4 % 
- ostale strane tvari max. 2 % 
- gubitak sušenjem max. 12,0 % 
- ukupni pepeo max. 10,0 % 
- pepeo netopljiv u HCl max. 2,5 % 


Željko Serdar, Hrvatski Centar Obnovljenih Izvora Energije
(HCOIE)


Yarrow

This herb plant was first used by ancient Greeks over 3,000 years ago for treating external wounds on the skin. The flowers and leaves of yarrow were eaten and also made into a tea-like drink. The fresh leaves were used to stop bleeding wounds, treat gastrointestinal problems, fight fevers, lessen menstrual bleeding and better circulation. The fresh leaves were also chewed on to relieve tooth aches. Scientists have credited yarrow for its benefits relating to almost every organ in the body.


Native Americans used yarrow for wounds, infections and bleeding. Chinese medicine gives it praise for the ability to affect the kidney, spleen, liver and energy channels throughout the body. Animal studies have also shown support for the use of yarrow in cleansing wounds and controlling the bleeding of wounds, cuts and abrasions. Many times yarrow is categorized as a uterine tonic, which supports the circulation in the uterine. Many studies show that it helps the uterine by improving the tone, increasing menstrual flow and reducing spasms in the uterine.





Other benefits of yarrow
Fights bacteria. Yarrow has an antiseptic action. The bitter parts and fatty acids encourage bile flow out of the gallbladder, known as the cholagogue effect. The free-flowing action improves digestion and prevents and gallstones from forming. Decongestant. Yarrow contains a drying effect and seems to improve coughs and sinus infections with sputum formation. Astringent. Very helpful with allergies where nasal secretions and watery eyes are caused by molds, dust, pollen and dander. Yarrow is also known to cause sweating in cases of flu, fevers and colds, helping to cure simple infections. Infusion. Yarrow is used to aid in healing skin conditions, such as eczema. The essential oils are used and rubbed onto the affected area. Anti-inflammatory. The oil found in the yarrow has been used to treat arthritis. Expectorant. Helps to cure colds. Promotes digestion. Helps in the secretion of enzymes and digestive juice and increases appetite; both help in digestion.


Yarrow is highly known and widely used in herbal medicines and supplied either externally or internally. The entire plant is used, both dried and fresh and is best when gathered while in flower. It is recommended to use caution when this herb if used in large or frequent doses taken for a long period of time. This can possibly be harmful and may cause rashes or make the skin sensitive to sun.


The leaves of the yarrow can be used cooked or raw. They have a bitter flavor but are good in mixed salads and best used when they are young. The leaves may also be used as a preservative or flavoring for beer. The flowers and leaves can be made into an aromatic tea and the essential oils found in the flowering heads can be used as flavor for soft drinks. Its basic components are Alpha Pinene, Acetate, Borneol, Beta Pinene, Borneol, Cineole, Camphene, Camphor, Gamma Terpinene, Isoartemisia Ketone, Chamazulene, Limonene, Sabinene and Tricyclene.

Recommended dosage and administration of yarrow for adults

~Yarrow flowers or equal preparations: 3g in one day as tea or infusion ~Extract (1:1, 25 ethanol): 1-4 ml three times in a day ~Dried herb: 2-4 g of infusion or capsules three times in a day ~Tincture (1:5; 40 ethanol): 2-4 three times in a day



Without generous private donations the CROATIAN CENTER of RENEWABLE ENERGY SOURCES would be unable to continue the valuable work it does in bringing objective information to an often overheated debate.


Making a donation is simple: a cheque payable to CROATIAN CENTER of RENEWABLE ENERGY SOURCES can be posted to the following address:


CROATIAN CENTER of RENEWABLE ENERGY SOURCES

Medarska 24,

10 000 ,Zagreb,

CROATIA


or on


CROATIAN CENTER of RENEWABLE ENERGY SOURCES

BANK ACCOUNT 2484008-1105745975

IBAN HR0324840081105745975

SWIFT RZBHHR2X


Zeljko Serdar, Croatian Center of Renewable Energy Sources
(CCRES)

Thursday, June 29, 2017

Is sea air good for you?



The summer holidays are here, which means there’ll soon be crowds flocking to the coast to spend the day at the beach. The supposed benefits of ‘fresh sea air’ are commonly extolled, but its origins might not be what you think: it’s the chemical compounds produced by algae and seaweed that contribute towards its characteristic smell.
Seaweed is one of the more obvious sources of malodorous compounds. It’s commonly seen washed up on the fringes of the sea, and as it decomposes, it can produce gases that contribute to the ‘sea smell’. The principle gas produced is hydrogen sulfide, which is generated via the bacterial breakdown of organic compounds in the seaweed. Hydrogen sulfide has an odour commonly described as akin to rotting eggs, and is actually a toxic gas in high concentrations.
However, before you start sprinting in terror from seaweed on all future vacations, it’s worth pointing out that, at low concentrations, hydrogen sulfide is harmless. In fact, it’s naturally produced in the body (it’s also a big contributor to the odour of flatulence), and since our bodies are capable of breaking it down, it can be tolerated at low levels pretty much indefinitely.
Seaweed isn’t the only plant that has a hand in the smell of the sea, however. Perhaps the most important contributor is algae. Algae contain a compound called dimethylsulfoniopropiante (DMSP for short) in their cells. The precise role of this compound still isn’t exactly known, but amongst other things, it’s thought to regulate the volume of the cells, and the fluid levels. This compound can be broken down, both by enzymes in the algae, and by bacteria. When this occurs, dimethylsulfide (DMS) is one of the compounds that can be produced.
DMS is another compound with a disagreeable odour at high concentrations – often compared to that of cabbage. Birds are actually attracted to the smell, as plankton in the sea also produced the gas, and this can lead them to fish. Huge quantities of DMS are produced in the ocean, with a billion tonnes being a rough estimate. DMS and hydrogen sulfide aren’t the sole contributors to the sea smell though – chemical derivatives of DMS can also have a hand.
After a while, the sulfurous algae emissions escape into the atmosphere, where beachgoers get the benefit of its lovely smell. That slow seep is actually the most abundant source of biological sulfur in the atmosphere—sulfur that helps with cloud formation. Scientists think that it plays a major role in controlling the planet’s temperature. “If these reactions didn’t exist, we would have a much different planet, and it wouldn’t be habitable," says Zeljko Serdar. "We rely on these microorganisms catalyzing these particular reactions as part of their metabolism for us to be able to live."
So that characteristic smell of the sea breeze? It’s how the creatures of the ocean, from the tiny plankton to the seabirds, converse with each other, ultimately making your beach vacation possible.
Finally, is sea air good for you? On that question, the jury seems to be out. Most of the studies that conclude that it is seem to rely on self-evaluations of the health of people living near the sea compared to those living further from it, with actual proven health benefits seeming thin on the ground. That said, as you lay back and savour the scent of the decay products of algae and seaweed, you can see why some people might find the idea that it’s good for them an encouraging thought! 

CROATIAN CENTER OF RENEWABLE ENERGY SOURCES

(CCRES)

Thursday, June 22, 2017

Chemtrails





Asking a question that assumes a particular answer is easy to do when you already think you're right and just want people to say you're right. The chemtrail conspiracy theory is the claim that long-lasting trails, so-called "chemtrails", are left in the sky by high-flying aircraft and that they consist of chemical or biological agents deliberately sprayed for unknown purposes undisclosed to the general public Believers (like me, myself & I) in the theory argue that normal contrails dissipate relatively quickly and that contrails that do not dissipate must contain additional substances.

We ask some question? #Chemtrail! Here are some answers from Weather Modification Inc. 3802 20th St. N Fargo, ND 58102 USA

Zeljko Serdar, CCRES
Q.
Who are you?
A.
Weather Modification, Inc., is a global atmospheric sciences company committed to continued advances in the field of weather modification.
Weather Modification, Inc., has a wide range of services to provide knowledge, data, equipment and capability at any phase in your project. We can also tailor a program to meet your specific objectives and manage it from beginning to end.
Our talented scientists, researchers, project managers, technicians, and pilots have the expertise you need to carry out an efficient, effective weather program.

Q.
Cloud seeding?
A.
Aerial cloud seeding is the process of delivering a seeding agent by aircraft - either at the cloud base or cloud top. Top seeding allows for direct injection of the seeding agent into the supercooled cloud top. Base seeding is the release of the seeding agent in the updraft of a cloud base.
Water resources are increasingly taxed by exploding demand and continued population growth. The world's population is projected to grow over 40% in the next 45 years.
Weather modification, commonly known as cloud seeding, is the application of scientific technology that can enhance a cloud's ability to produce precipitation. Weather Modification, Inc., is on the forefront of scientific technology to maximize water availability worldwide. Application of scientific concepts and extensive scientific experimentation has proven that cloud seeding increases the amount of precipitation.

Q.
What are the common applications of cloud seeding?
A.
Cloud seeding is most commonly used to increase precipitation, both in warm and cold seasons (summer and winter). Spring and summer operations are usually conducted from aircraft, as the clouds of interest are convective (cumuliform). Winter storms are most often seeded to increase the snowfall over mountainous terrain. In these cold-season programs, seeding can be done either from aircraft or from ground-based facilities.
Warm season cloud seeding is also used to mitigate hail damage to homes, automobiles, property and crops. Hail damage mitigation efforts utilize airborne delivery of the seeding material.
In addition, cold fogs, those made of cloud droplets but existing at cold temperatures (less than 0°C); can often be dissipated by seeding with ice-forming agents.

Q.
How can the effectiveness of cloud seeding operations be determined?
A.
The success of cloud seeding programs for increased participation can be measured using precipitation gauge data to compare rainfall or snowfall during comparable seeded and non-seeded periods. Another evaluation technique relies on the comparison of seeded seasons with other non-seeded seasons in the same location. For warm season seeding projects, weather radar is sometimes used for evaluations, because all the clouds within range are measured. Some wintertime projects, designed to increase snowfall and subsequent runoff, measure changes in stream flows to assess the impact of seeding efforts.

Q.
What are the environmental consequences of weather modification?
A.
Environmental impact from cloud seeding operations can be broken into two categories:
The effects of the chemical seeding agents used for the programs
The impacts of precipitation changes

Environmental Impact from Cloud Seeding Agents
The active ingredient in cold cloud seeding agents is silver iodide, or AgI. Unlike ionic silver, the silver iodide compound is very stable, essentially inert. Numerous studies have been conducted that clearly demonstrate its safety. Even projects operated for decades have experienced no adverse environmental impacts because of silver iodide. Additional information about the safety of silver iodide, is found in many studies and reports. The active ingredient in warm cloud seeding is simple salt, either sodium chloride (NaCl, table salt), or calcium chloride (CaCl). Both are found abundantly in the environment; sea spray releases millions of tons of NaCl into the atmosphere annually.
Environmental Impact of Precipitation Changes
The effects of cloud seeding on precipitation are typically on the order of 10%, while seasonal natural variability may be as much as a factor of two. When viewed in this context, the seasonal effects resulting from increased precipitation are negligible.

Q.
Are cloud seeding activities subject to regulation or control?
A.
In the United States, most states have laws in place that require permits for all cloud seeding activities, and that those persons conducting the projects be qualified to do so. In addition, site-specific permits and/or environmental evaluations may sometimes be required. U.S. Federal law requires that all cloud seeding operations be reported annually to the National Oceanic and Atmospheric Administration (NOAA).

Q.
How quickly can Weather Modification, Inc. , launch a project?
A.
Depending upon the location and nature of the program, we may be able to mobilize an effective program within a few weeks of a signed contract. The fastest response generally includes the use of facilities owned by Weather Modification, Inc., including aircraft, radars and ground-based seeding equipment. If a client wants to use aircraft they already own, additional time is required to make required aircraft modifications and obtain needed certifications. Because of our extensive experience and resources, Weather Modification, Inc., does this faster than anyone.

Q.
Do I need to have my own aircraft, or does Weather Modification, Inc. , supply them?
A.
We operate a fleet of reliable twin-engine aircraft suitable for virtually every project, from warm season cloud base seeding operations, to wintertime operations in known icing conditions, to on-top convective storm treatment and/or atmospheric assessment and evaluation. We can even handle your high-altitude (up to 43,000 ft) research needs.
If you wish to use your own aircraft, we can quickly install all requisite seeding equipment and instrumentation for you.
Either way, your program can be up and running quickly and safely.

Q.
What does a cloud seeding project cost?
A.
The cost of a project depends upon the target area size, season and topography, types of seeding to be conducted, needed equipment and personnel, and the length of the desired project period. It is usually better to consider benefit-to-cost ratios. If you think you might be interested, contact us and we’ll be happy to assess your needs and offer an estimate.

Q.
If I am interested in starting a weather modification project, where do I begin?
A.
You can contact us by telephone, mail, fax – or via our simple online form. Or if you prefer, e-mail us at info@weathermodification.com. Tell us where and when you need your project, what you hope to accomplish, and we’ll help you get started.

Q.
Some for the end?
A.
Let us help you better manage your atmospheric and water resources.
When most people look up they see clouds.
WE SEE POTENTIAL.