scholarly journals COMPARAÇÃO DE BIOMASSA VEGETAL E ANIMAL EM BIOARGAMASSA

2021 ◽  
Vol 7 (4) ◽  
pp. 31-38
Author(s):  
Jupira Almeida ◽  
Antonio Thome ◽  
Fabiana Tonial ◽  
Roberto De Martini
Keyword(s):  
Vicia Villosa ◽  
Sporosarcina Pasteurii

O uso de microrganismos em meio líquido para o processo de biocimentação, favorece a continuidade do crescimento bacteriano. Entretanto se este demora para ser usado, para de crescer rapidamente, levando a morte celular. Este estudo comparou duas formas de produção de uma biomassa, capaz de armazenar os microrganismos em estado de latência mantendo a viabilidade para posterior utilização. Aqui foi descrito o preparo de biomassas, feitas com materiais orgânicos e bactéria Sporosarcina pasteurii (CCT 0538 ATCC 1185). Foram testadas biomassas de origem animal (esterco de aves) e vegetal (ervilhaca - Vicia villosa Roth). Ambas biomassas mantiveram a viabilidade dos microrganismos, sendo que a vegetal foi mais eficiente apresentando maior crescimento bacteriano após a revitalização. Para teste foram moldados corpos de prova referência (sem biomassa) e também com cada uma delas, e depois de 28 dias ensaiados a tração e compressão. A resistência a tração apresentou um aumento de 41,2 % (biomassa animal) e de 44,7 % (biomassa vegetal). Na resistência a compressão o aumento foi de 37,8 % (biomassa animal) e de 38,8 % (biomassa vegetal), comparados a argamassa de referencia (sem adição de microrganismo).

scholarly journals Effect of Different Mineralization Modes on Strengthening Calcareous Sand under Simulated Seawater Conditions

2021 ◽  
Vol 13 (15) ◽  
pp. 8265
Author(s):  
Shiyu Liu ◽  
Bowen Dong ◽  
Jin Yu ◽  
Yanyan Cai ◽  
Xingqian Peng ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Construction Projects ◽  
Construction Material ◽  
X Ray Diffraction ◽  
Calcareous Sand ◽  
Sand Column ◽  
Sporosarcina Pasteurii ◽  
Phosphate Mineralization ◽  
Filling Water ◽  
Simulated Seawater

Calcareous sand, as a blow-fill or construction material, is widely used in island and reef construction projects in marine environments after treatment. When microorganism-induced mineralization is used to strengthen calcareous sand, salinity and other conditions in the marine environment will adversely affect microorganisms or their mineralization process. For this reason, the two environmental conditions created by deionized water and simulated seawater were introduced to explore their effects on the growth and urease activity of Sporosarcina pasteurii. Then, the changes in the permeability and mechanical strength of calcareous sand under different mineralization methods were compared by one-dimensional sand column tests. Finally, the reinforcement mechanism was compared and analyzed based on the results of scanning electron microscopy and X-ray diffraction tests. The results show that Sporosarcina pasteurii can induce carbonate and phosphate precipitation and mineralization to strengthen calcareous sand in simulated seawater. The mineralized products greatly reduce the permeability of calcareous sand and significantly improve the mechanical strength by wrapping calcareous sand particles, filling water seepage channels and cementing adjacent particles. The reinforcement effect of carbonate mineralization is better than that of phosphate mineralization, but phosphate mineralization has less impact on the environment during the treatment process.

Ca-mediated alleviation of Cd2+ induced toxicity and improved Cd2+ biomineralization by Sporosarcina pasteurii

2021 ◽  
pp. 147627
Author(s):  
Longyang Fang ◽  
Qijian Niu ◽  
Liang Cheng ◽  
Jianxiong Jiang ◽  
Yang-Yang Yu ◽  
...  
Keyword(s):  
Sporosarcina Pasteurii

RETROSPECTIVE ANALYSIS OF HAIRY VETCH (Vicia Villosa roth) POISONING IN ARGENTINA (2004- 2019)

Toxicon ◽  
2021 ◽  
Author(s):  
Laura S. Aguirre ◽  
Germán Cantón ◽  
Eleonora Morrell ◽  
Gabriela V. Sandoval ◽  
Diego M. Medina ◽  
...  
Keyword(s):  
Retrospective Analysis ◽  
Hairy Vetch ◽  
Vicia Villosa

Урожайность вико-пшеничных травосмесей в Центральной зоне Краснодарского края

2021 ◽  
pp. 12-14
Author(s):  
Александра Сергеевна Скамарохова ◽  
Наталья Александровна Бедило ◽  
Наталья Александровна Юрина ◽  
Роман Викторович Кравченко
Keyword(s):  
Triticum Aestivum ◽  
Triticum Aestivum L ◽  
Vicia Villosa

В растениеводстве и кормопроизводстве вику используют обычно в травосмесях со злаковыми культурами. В условиях Центральной зоны Краснодарского края на чернозёме выщелоченном в 2019 г. проведены полевые опыты с применением различных дозировок минеральных удобрений под вико-пшеничные травосмеси. Отмечено, что повышенные дозы вносимых удобрений заметно угнетали прирост зелёной массы. В опытах изучали сорта вики Орлан и Чермонорская (Vicia pannonica Granz), Глинковская и Луговская-2 (Vicia villosa or Roth), а также сорт Таня пшеницы озимой твердой (Triticum aestivum L.). По полученным результатам, наиболее оптимальными по урожайности оказались смеси трав с сортами вик Орлан (110,2 ц/га) и Луговская 2 (85,6 ц/га). В 3-ю декаду мая вико-пшеничные смеси имеют наивысшую продуктивность по зеленой массе и оптимальную питательную ценность. Данный период соответствует массовому цветению вики и началу колошения пшеницы.

scholarly journals Rye (Secale cereale L.) and Hairy Vetch (Vicia villosa Roth) Intercrop Management in Fresh-market Vegetables

1996 ◽  
Vol 121 (3) ◽  
pp. 586-591 ◽  
Author(s):  
Vasey N. Mwaja ◽  
John B. Masiunas ◽  
Catherine E. Eastman
Keyword(s):  
Cover Crops ◽  
Secale Cereale ◽  
Diamondback Moth ◽  
Cabbage Looper ◽  
Growth And Yield ◽  
Winter Rye ◽  
Hairy Vetch ◽  
Fresh Market ◽  
Vicia Villosa ◽  
Snap Bean

The effect of cover-crop management on growth and yield of `Bravo' cabbage (Brassica oleracea var. Capitata L.), `Market Pride' tomato (Lycopersicon esculentum Mill.), and `Mustang' snap bean (Phaseolus vulgaris L.) was determined. Each fall, `Wheeler' winter rye (Secale cereale L.) and `Oregon Crown' hairy vetch (Vicia villosa Roth) were interseeded. The following spring, the cover crops were killed by either applying glyphosate and mowing (CC-G) or mowing and disking (CC-D). Trifluralin was preplant incorporated into bare ground as a conventional tillage (CT) treatment. In 1992 and 1993, a chicken (Gallus gallus L.) based fertilizer was applied to half the subplots. The greatest snap bean and cabbage yields were in CT. The system with the greatest tomato yields varied. In 1991, the greatest tomato yields were in the CT treatment, while in 1992 yields were greatest in the CT and CC-D treatments, and in 1993 the greatest yields were in CT and CC-G. Cabbage yields were greater in the fertilized than the unfertilized treatments. In 1992, infestations of diamondback moth, imported cabbageworm, and cabbage looper were greater in CT than in the CC-G treatment. Three years of the CC-G treatment increased soil organic matter from 3.07% to 3.48% and increased soil pH from 6.30 to 6.51, while neither changed in the CT. Chemical names used: N-(phosphonomethyl) glycine (glyphosate); 2,6-dinitro-N,N-dipro`pyl-4-(trifluoromethyl) benzenamine (trifluralin).

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