The alarming increase in pesticide residues poses a major threat to aquatic and natural habitats. Therefore, it has become essential design extremely operationally economically advantageous systems for the removal of carbofuran pesticides from wastewater. Here, an aluminum-based metal-organic framework (MOF), MIL-53-NH2, its modified forms, MIL-53-NH-ph, MIL-53-NH-ph-Fe, MIL-53-NH-ph-Zn, MIL-53...

The conformational landscape of α-aminoglycine has been studied. A search first done using a set different low-cost computational methods. conformers obtained have finally optimized at MP2 and B3LYP-D3/6–311++G(2d,p) levels theory. 15 with relative energies lower than 2000 cm−1 obtained. For the global minimum (IIa) cooperative network formed by an OH···NH, NH···N NH···OC hydrogen bonds, closin...

Môi tr??ng ??u t? là m?t trong nh?ng nhân t? có ?nh h??ng l?n t?i ho?t ??ng thu hút v?n tr?c ti?p n??c ngoài. Trong n?m qua, t?nh Thái Nguyên ?ã ??t ???c thành t?u nh?t ??nh vi?c c?i thi?n môi nh?m Tuy nhiên, làm th? nào ?? th? nâng cao h?n n?a ngoài bài toán mà c?n ph?i xem xét. Nghiên c?u c?a tác gi? phân tích thông qua ch? s? n?ng l?c c?nh tranh c?p t?nh, ??n vào Nguyên. Ngu?n li?u th? tích,...

یکی از پارامترهای مهم محیط­های پخش نوترون، طول نوترون حرارتی است. روش مرسوم محاسباتی استفاده کد MCNP برمبنای توزیع شار در محیط و برازش تابع ریاضی مربوطه بر آن این پژوهش، روشی نوین که مبنای کارت PTRAC است، ارایه شده پارامتر برای آب­سبک اساس روش­های فوق محاسبه با مقادیر گزارش مراجع مقایسه گردیده تطابق خوبی نیز مشاهده حسن فوق، عدم نیاز به علاوه فرض می­شود تا محل چشمه، فاصله­ی کافی وجود دارد. مسأله...

In this study, a scanning ion-selective electrode technique (SIET) was applied to measure H(+), Na(+), and NH(4)(+) gradients and apparent fluxes at specific cells on the skin of medaka larvae. Na(+) uptake and NH(3)/NH(4)(+) excretion were detected at most mitochondrion-rich cells (MRCs). H(+) probing at MRCs revealed two group of MRCs, i.e., acid-secreting and base-secreting MRCs. Treatment w...

Although colonic lumen NH(4)(+) levels are high, 15-44 mM normal range in humans, relatively few studies have addressed the transport mechanisms for NH(4)(+). More extensive studies have elucidated the transport of NH(4)(+) in the kidney collecting duct, which involves a number of transporter processes also present in the distal colon. Similar to NH(4)(+) secretion in the renal collecting duct,...

Magnesium amidoborane monoammoniate (Mg(NH(2)BH(3))(2) x NH(3)) which crystallizes in a monoclinic structure (space group P2(1)/a) has been synthesized by reacting MgNH with NH(3)BH(3). Dihydrogen bonds are established between coordinated NH(3) and BH(3) of [NH(2)BH(3)](-) in the structure, promoting stoichiometric conversion of NH(3) to H(2).