Results 71 to 80 of about 213 (130)

BIẾN ĐỘNG MẬT ĐỘ VI KHUẨN HỮU ÍCH TRONG AO NUÔI TÔM SÚ (PENAEUS MONODON) THÂM CANH

open access: yesTạp chí Khoa học Đại học Cần Thơ, 2010
Tổng vi khuẩn, Vibrio và một số nhóm vi khuẩn hữu ích đã được xác định trong ao nuôi tôm thâm canh tại tỉnh Sóc Trăng. Phương pháp thu mẫu được áp dụng theo (Huy 2003 và Chinabut et al., 2003).
Phạm Thị Tuyết Ngân   +1 more
doaj  

Fortifikasi probiotik dalam pakan untuk meningkatkan pertumbuhan ikan gurami (Osphronemus gouramy)

open access: yesActa Aquatica, 2018
Abstrak Ikan gurami (Osphronemus gouramy) merupakan komoditas ikan air tawar yang bernilai ekonomis penting tetapi mempunyai kendala dalam budidaya, salahsatunya pertumbuhannya lambat.
Riri Ezraneti   +2 more
doaj   +1 more source

SẢN XUẤT THỬ NGHIỆM CHẾ PHẨM MEN VI SINH VÀ CHẾ PHẨM XỬ LÝ MÔI TRƯỜNG CHO SINH VẬT THỦY SINH

open access: yesTạp chí Khoa học Đại học Đà Lạt, 2012
Chế phẩm men tiêu hóa elacmen gồm 4 chủng vi sinh vật L. acidophillus, L. sporogenes, B. subtilis, S.cerevisiae trong 1 sản phẩm và chế phẩm xử lý môi trường biozeo gồm 5 chủng vi sinh vật Nitrobacter sp, Nitrosomonas sp, B.megaterium, B.licheniformis, B.
Hoàng Việt Hậu   +2 more
doaj   +1 more source

Time response of Nitrobacter to toxicity

open access: yesEnvironment International, 1984
Abstract Nitrobacter toxicity experiments were conducted by using a mixed culture obtained from biomass on rotary biological contactors. The culture was treated with inorganic and organic toxicants, and the toxic effect was expressed in nitrite consumption. Contact time was found to be an important factor in toxic effect.
openaire   +1 more source

Metabolic and Proteomic Responses to Salinity in Synthetic Nitrifying Communities of Nitrosomonas spp. and Nitrobacter spp.

open access: yesFrontiers in Microbiology, 2018
Typically, nitrification is a two-stage microbial process and is key in wastewater treatment and nutrient recovery from waste streams. Changes in salinity represent a major stress factor that can trigger response mechanisms, impacting the activity and ...
Chiara Ilgrande   +6 more
doaj   +1 more source

Soil moisture-driven changes in the balance of ammonia and nitrite oxidation

open access: yesEnvironmental and Biogeochemical Processes
Soil moisture profoundly regulates nitrification by influencing oxygen (O2) diffusion, substrate mobility, and microbial activity. However, the mechanisms underlying moisture-driven shifts in the coupling between ammonia (NH3) and nitrite (NO2 ...
Zhijie Li   +7 more
doaj   +1 more source

Budidaya Udang Vannamei (Litopenaeus vannamei) Semiintensif dengan Metode Sirkulasi Tertutup Untuk Menghindari Serangan Virus
[The Semiintensive Culture Of Litopenaeus vannamei By Closed Circulation Method To Prevent Virus Attack]

open access: yesJurnal Ilmiah Perikanan dan Kelautan, 2009
The failure of vannamei shrimp culture often caused by virus attack, i.e. WSSV, TSV and IMNV. So that it need an alternative method like closed circulation method and probiotic application.
Slamet Subyakto   +3 more
doaj   +1 more source

Grain Filling and Some Fatty Acids Composition of Canola (Brassica napus L.) with Application of Bio-Fertilizers and Irrigation withholding [PDF]

open access: yesJournal of Agricultural Science and Sustainable Production, 2017
The effect of irrigation withholding and bio-fertilizers on grain filling components, chlorophyll content and some fatty acids composition Gacomo cultivar of canola, was studied by  factorial experiment based on randomized complete block design with ...
Hossein Vatan Doost   +3 more
doaj  

Effect of Systemic Soil Insecticides and a Plant Product on Microbial Load of Soil in Root (wilt) Affected Coconut Monocropping Ecosystem

open access: yesCORD, 2001
The changes undergoing in the microorganism population due to the application of phorate 10G, carbofuran 3G (@ 10 g a.i./ palm) and neem oil cake (@ 1.5 kg / palm) in the basin region of coconut growing in root (wilt) affected area was studied ...
Murali Gopal   +3 more
doaj   +1 more source

Effects of Nitrosomonas and Nitrobacter in removal of ammonia and on haematology and serum biochemical parameters of Huso huso

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2019
Hematological parameters are useful indicators for assessing the physiological conditions of Sturgeon in response to stress, pollutants and physiological and ecological changes.
A. Mohmmadsalehi; E. Rajabzadeh; M. Soltani; M. Reshno
doaj  

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