Results 41 to 50 of about 50,619 (291)

Changes in nitric oxide synthase and nitrite and nitrate serum levels in patients with or without multidrug-resistant tuberculosis undergoing the intensive phase of antituberculosis therapy

International Journal of Mycobacteriology, 2016
Objective/background: There is a paucity of published data on the effect of tuberculosis (TB) chemotherapy on nitric oxide (NO) synthesis and metabolism in newly diagnosed and relapsed patients with or without multidrug-resistant TB (MDR-TB).
Dmytro O Butov, Mykhailo Kuzhko, Tatyana Butova, Ganna Stepanenko   +3 more
doaj   +1 more source

Distribution of nitrogen compounds in important sections of sugar beets [PDF]

, 2016
In literature the beet is often described as consisting of the following technologically important sections: crown, root and tail. The aim of the study was to determine the distribution of nitrogen compounds in the technologically important beet sections
Antczak-Chrobot, Aneta, Bąk, Paulina, Wojtczak, Maciej   +2 more
core  

Boosting Seawater Desalination by Ampere‐Level Nitrate Electroreduction On Defect‐Rich Ultrathin RuCu Alloy Nanostructures

Advanced Materials, EarlyView.
Defect engineering of ultrathin RuCu alloy nanostructures has been successfully achieved to enhance ammonia electrosynthesis under indutrial‐level current density. Simultaneously, the stable ampere‐level operation of nitrate electroreduction on defective RuCu nanostructures can drive seawater desalination at an ultrafast salt removal rate, offering an ...
Juan Wang, Liang Guo, Qingbo Wa, Fengkun Hao, Fu Liu, Chaohui Wang, Yunhao Wang, Mingzheng Shao, Yiwei Guo, Guozhi Wang, Xiang Meng, Fangren Qian, Xiuyun Zhang, Chongyi Ling, Shengqi Chu, Zhanxi Fan   +15 more
wiley   +1 more source

Inappropriate Total Oxidant/Antioxidant Status, Nitric Oxide Oxidation End Products and Trace Element Levels in Patients with Inflammatory Bowel Disease [PDF]

Iranian Journal of Colorectal Research, 2018
Background: This study aimed at evaluating oxidant and antioxidant markers (including nitrite, nitrate, total antioxidant capacity(TAC), malondialdehyde (MDA), iron, selenium, glutathione peroxidase (GPx), and glutathione reductase (GR) in patients ...
Erfan Mohammadi, Durdi Qujeq, Hassan Taheri, Karimollah Hajian-Tilaki   +3 more
doaj  

Reactivity of aluminum sulfate and silica in molten alkalimetal sulfates in order to prepare mullite [PDF]

, 2004
With the aim of preparing mullite, reactions between aluminum sulfate and silica in appropriate proportions and molten sulfate media M2SO4 (M=Na and/or K) were performed at different temperatures.
Durand, Bernard, El Ouatib, Rachida, Er-Rakho, Lahcen, Guillemet-Fritsch, Sophie, Moussab, Redouane, Samdi, Azzeddine   +5 more
core   +2 more sources

Intrinsic Coordination Architecture Governing Selectivity Divergence Between Extended and Single‐Site Electrocatalysts

Advanced Materials, EarlyView.
Catalyst coordination acts as a loaded dice biasing reaction selectivity. Single‐atom site catalysts lock intermediates in exposed configurations, enabling continued hydrogenation and favoring oxygen‐retaining products. In contrast, extended metal surfaces fully coordinate and shield reactive centers, promoting deoxygenation pathways. This work reveals
Chengyi Zhang, Ziyun Wang
wiley   +1 more source

Effect of temperature and type of packages on nitrates and nitrites content in lettuce

Acta Agrobotanica, 2013
Lettuce wrapped in unperforated PE film, perforated PE film, stretch film and without wrapping was stored at 1, 6, 20 and 28°C. Freshly harvested lettuce and after one day of storage, independently on storage conditions, did not contains nitrites ...
Józef Bąkowski, Helena Michalik, Marcin Horbowicz   +2 more
doaj   +1 more source

Ratio of natural isotopes of nitrogen. I. Primary results: soils of Dombes [Translation from: Revue d'Ecologie et de Biologie du Sol 14, 279-287, 1977] [PDF]

, 1980
Utilization of the heavy isotope of nitrogen as a tracer has found numerous applications in soil biology. It allows better definition of different stages of the nitrogen cycle, in particular the immobilization-mineralization cycle.
Chalamet, A., Domenach, A. M., Pachiaudi, C.   +2 more
core  

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Maternal characteristics associated with the dietary intake of nitrates, nitrites, and nitrosamines in women of child-bearing age: a cross-sectional study

Environmental Health, 2010
Background Multiple N-nitroso compounds have been observed in animal studies to be both mutagenic and teratogenic. Human exposure to N-nitroso compounds and their precursors, nitrates and nitrites, can occur through exogenous sources, such as diet ...
Canfield Mark A, Romitti Paul A, McDonald Thomas J, Rene Antonio A, Huber John C, Steck Michelle D, Sharkey Joseph R, Brender Jean D, Griesenbeck John S, Langlois Peter H, Suarez Lucina   +10 more
doaj   +1 more source