Serija predavanj o bioplinu

Serija predavanj Sredin vrh se je preselila v prostore društva DOPPS na Tržaško 2. Prvi sklop predavanj bo posvečen bioplinu.

5.5.2010, 18:00 - Bioplin proizvajajo mikroorganizmi
Romana MARINŠEK LOGAR

12.5.2010, 18:00 - Odpadki kot gorivo bioplinarn
Igor ŠKRJANEC

26.5.2010, 18:00 - Z bioplinom po svetu
Ilja Gasan OSOJNIK ČRNIVEC

- vabljeni -

Nagib vs. kremen

Med brklanjem med zalivalno PC-mehkoopremo sem naletel na tole nagibno vazo. Vaza med izparevanjem vode spreminja nagib in na ta način sproča svojemu lastniku o količini vode v njeni notranjosti. Precej zabaven koncept, ki pa ga rastline verjetno ne bodo sprejele dobro. Ko bi se le kdo spomnil kakšneg bolj enostavnega načina za pogled v notranjost vaze...

Kakorkoli že, še zmeraj dovolj simpatično in lou-teh za objavo.

Hemcrete ©

vir / source;

- Tradical ©

- inhabitat.com

Zaznavanje celične gostote / Quorum sensing

Med gradnjo Babilonskega stolpa naj bi se ljudem zavezali jeziki in odtlej naj bi bilo gonilo sveta človeško nerazumevanje. Očitno imajo še bakterije več pameti, saj znanstveniki v zadnjem času odkrivajo natančne mehanizme, kako ti majceni organizmi komunicirajo znotraj vrste in celo medvrstno.

Za več informacij si oglejte odlično predavanje ga. Bonnie Bassler (Princeton, New Jersey).

Če vas je presenetila tista z desetimi odstotki, je vredno prebrati še tole razmišljanje iz NYT - Microbes 'R' Us.

vir / souirce: Ted

[en] I am told that the Tower of Babvel had something to do with the fact that the world-as-we-know-it is propelled by infinite human incomprehension (well, at least language-vise). As scientist are starting to learn, even bacteria know better. The mechanisms of inter- and even intra-species communication are being unravelled.

Watch Bonnie Bassler's talk on quorum sensing, to learn more. And if you were taken aback by those 10 percent, read the article Microbes 'R' Us published in NYT.

LCA v prostem dostopu / LCA now open source

Na zadnjem delovnem mestu sem imel veliko opraviti z metodologijo LCA (life cycle assessment) oz. ocenjevanjem življenjskega cikla po slovensko. Gre za postopek ocenjevanja okoljskega vpliva nekega proizvoda na izbrane kategorije v okolju (toplogredne emisije, potencial za tvorbo kislega dežja, potencial za  širjenje ozonske luknje, potencial za evtrofikacijo voda, raba energije, raba vode, ...) tekom celotne življenjske dobe proizvoda (proizvodnja surovin, proizvodnja proizvoda, transport, trgovina, ravnanje z odpadki, recikliranje, ...).

Metodologijo usmerja družina standardov ISO 14040, programska oprema in baze podatkov za ocenjevanje vlipvov na posamezne okoljske kategorije so ponavadi (ne)dostopne pod zelo zasoljenimi cenami. Ko sem  začel z delom na projektu, sem si mislil: "zagotovo obstaja open source različica".  In res je obstajala, profesionalna, prosto dostopna, s hudimi algoritmi in fency barvami v končnih grafikonih. Ni hudiča, bila je to beta različica, z bazami podatkov ki so omogočale več ali manj nič drugega kot pregledovanje struktur.

Takoj naslednji dan po oddaji končnega poročila mi je Andreas Ciroth, eden izmen LCA gurujev, poslal obvestilce, da je OpenLCA razhroščen in pripravljen za vsesplošno uporabo :)

Kakorkoli že, imel sem priliko preizkusuti preizkusno različico programa in ga pripročam.

KLIK za obisk uradnega portala

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KLIK za prenos programa

[en] My previous work assignment included the evaluation of environmental impact of various  agriculture-related systems. For this, I have choosen the LCA (life cycle assessment) approach. This methodology array takes into account the product’s entire life cycle (traw material production, product production, consumption, waste management, ...) to assign the environmental contribution to numerous impact categories (global warming potential, acidification potential, eutrophication potential, resources consumption, ...).

As LCA is guided by the ISO family 14040 and the usual software and databases for the assessment at the start-up of our project were priced quite highly. I was looking for other options. I was certain that open source  alternatives just had to exist. And I was right, the software that was online was even beter than the existing "professional" solutions. But it was in beta and all the stages of LCA were not quite possible yet.

Ever since, I have been anticipating the new release. And the very next day after we have finished our project obligations, I got a short note from the program creators. It said: something like: 'Yesterday we released a bugfix for openLCA, you can download it at the usual download site.' :)

Anyhu, I had the opportunity to test the test version of the program and I recommend it.

CLICK here for the homepage

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CLICK here for the download

Versatile

Glavno nagrado z letošnjega netečaja Invent Your World je odnesel domov 15-letni srednješolec. Javier Fernández-Han je osnoval idejo zaprtega kroga za proizvodnjo hrane in energije, v katerem so modularno prepleteni obstoječi sistemi za proizvodnjo energije iz obnovljivih virov (proizvodnja biogoriv iz alg, proizvodnja bioplina, ...), sistemi za pridelavo hrane in živalskih krmil, proizvodnja kisika in strategije zmanjševanja toplogrednih emisij. Zmagoviti formuli, ki naj bi bila še posebej prilagojena za nerazvite dežele, je ime VERSATILE.

Ravno pravi čas, saj se je glede na članek v NYT prebudil tudi petrolejski konzervant Exon, ki menda že nekaj časa vlaga v razvoj četrte generacije goriv (rastline, ki so sposobne kopičenja večjih koncentracij ogljika) iz alg.

View more documents from Youth Venture.

[en] A 15-year old boy has won the top prize in this year's Invent Your World challenge. Javier Fernández-Han work is based on a holistic energy resource system which is coupling several modular subunits (waste treatment, biogas and algae-oil, production of food and fodder, reduction of greenhouse gas emissions and oxygen production). The modular array is designated for use in developing countries and has been named the VERSATILE system.

The time is just right, as Exon is investing into oligae according to an article recently published in NYT.

Šitake / Lentinula edodes

Letos že drugo leto malce eksperimentiram z gojenjem šitak (Lentinula edodes). Tokrat imam v paci šest kompletov za gojenje in dobrih sto moznikov za nacepljanje na hlode, ki so mi jih poslali s Podkorena. Glede na dosedanje poletne vremenske razmere sem komplete postavil kar na plano pod streho.

[en] It is my second year of shiitake (Lentinula edodes) growing. I got six growing sets and hundreds of mushroom-inoculated dowels from a SI company based in Podkoren. It has been a damp summer this year, so the little guys are happily growing outside.

Takle je izplen prvega obroda (samo klobuki) / [en] First growth period yield (just the 'hats'):

Datum; Obirek; Vreme
Date; Yield; Weather

07.7.09; 230g; 13°C, 100%RH
10.7.09; 380g; 10°C, 100% RH
11.7.09; 360g; 15°C, 100% RH
14.7.09; 410g; 20°C, 70%RH
16.7.09; 400g; 20°C, 57%RH

Sum -1.780g-

Novo zatočišče za gobice / [en] Mushroom sanctuary

Prva nabirka / [en] First pick

Po prvem obrodu substrat namočimo v vodi.
[en] After the first growth period, the substrate is soaked in water.

Mozniki pred zabijanjem v hlod. Gobice bodo rasle naslednje leto.

[en] Dowel fixation.
Mushrooms will grow out of this log in the next year.