نتایج جستجو برای: endothermic

تعداد نتایج: 2055  

2016
Dylan J. Sures Sulata K. Sahu Pedro I. Molina Alexandra Navrotsky May Nyman

The Cs-effect states Cs has more covalent character in bonding interactions than the lighter alkalis. It is exploited in organic synthesis and influences behavior in water, most notably radioactive Cs in nuclear wastes or the environment. Niobium polyoxometalates (Nb-POMs) provide a unique opportunity to probe aqueous phase ion-pairing responsible for cesium’s solution behavior, because Nb-POMs...

2011
Yu-Kuo Wang Sheng-Cih Huang Yi-Fang Wu Yu-Ching Chen Yen-Ling Lin Manoswini Nayak Yan Ren Lin Wen-Hung Chen Yi-Rong Chiu Thomas Tien-Hsiung Li Bo-Sou Yeh Tung-Kung Wu

Recombinant thermostable direct hemolysin from Grimontia hollisae (Gh-rTDH) exhibits paradoxical Arrhenius effect, where the hemolytic activity is inactivated by heating at 60 °C but is reactivated by additional heating above 80 °C. This study investigated individual or collective mutational effect of Tyr53, Thr59, and Ser63 positions of Gh-rTDH on hemolytic activity, Arrhenius effect, and biop...

Journal: :Molecular bioSystems 2015
Yumiko Tanabe Satoru Nagatoishi Kouhei Tsumoto

Y-box binding protein 1 (YB-1) binds to both RNA and DNA to control transcription and translation for the regulation of various cellular systems. YB-1 is overexpressed in some cancer cells and is a potential target for treatment of cancer. Herein, we describe isothermal titration calorimetry analyses of the interaction between a number of recombinant YB-1 domains and nucleic acids to identify t...

Journal: :The journal of physical chemistry. B 2007
Lin Li Erjia Liu Chun Hoong Lim

The effects of a cationic surfactant, cetyltrimethylammonium bromide (CTAB), on the gelation of methylcellulose (MC) in aqueous solutions have been investigated by micro differential scanning calorimetry (micro DSC) and rheology. Methylcellulose had a weight average molecular weight of 310,000 and a degree of substitution of 1.8. The concentration of MC was kept at 0.5 wt % (0.016 mM) and 1 wt ...

Journal: :Baghdad Science Journal 2022

The current research includes the adsorption of Rhodmine-B Dye on surface Citrus Leaves using technique UV. Vis spectrophotometer to determine data quantitative at various contact time, ionic strength, PH and temperature conditions. As a function temperatures 25,35,45,55 0C, dsorption phenomenon was examined, results showed that Rhodamine-B leaves rose with increasing (endothermic process). Usi...

Journal: :Biophysical journal 2007
Jörg Howe Jörg Andrä Raquel Conde Maite Iriarte Patrick Garidel Michel H J Koch Thomas Gutsmann Ignacio Moriyón Klaus Brandenburg

Cationic antimicrobial cationic peptides (CAMP) have been found in recent years to play a decisive role in hosts' defense against microbial infection. They have also been investigated as a new therapeutic tool, necessary in particular due to the increasing resistance of microbiological populations to antibiotics. The structural basis of the activity of CAMPs has only partly been elucidated and ...

2015
Stuart Bartlett Seth Bullock

In this paper, we explore the emergence and direct interaction of two different types of dissipative structure in a single system: self-replicating chemical spot patterns and buoyancyinduced convection rolls. A new Lattice Boltzmann Model is developed, capable of simulating fluid flow, heat transport, and thermal chemical reactions, all within a simple, efficient framework. We report on a first...

Journal: :Journal of morphology 2012
Lucia Gaucher Nicolás Vidal Alejandro D'Anatro Daniel E Naya

Digestive flexibility is a widespread phenomenon among animals, and the congruence between empirical data and optimal digestion models strongly supports the idea that it has evolved by natural selection. However, current understanding of the evolution of this amazing flexibility is far from being comprehensive. Evidence from vertebrate tetrapods suggests that there are two major mechanisms for ...

2013
Frank Wendland Christian Näther Wolfgang Bensch

The reaction of manganese(II)-chloride-tetrahydrate, caesium triselenide and elemental se­ lenium or tellurium in 1,2-ethanediamine (en) under solvothermal conditions leads to the formation of two new isostructural compounds [Mn(en)3]Se3 (1) and [Mn(en)3]TeSe2 (2). The compounds crystallize in the orthorhombic space group Pbcn with the lattice parameters a = 1149.39(9), b = 1506.83(11), c = 935...

2010
Qun Chen Kangding Yang Moran Wang Ning Pan Zeng-Yuan Guo

Using the analogy between heat and mass transfer processes, the recently developed entransy theory is extended in this paper to tackle the coupled heat and mass transfer processes so as to analyze and optimize the performance of evaporative cooling systems. We first introduce a few new concepts including the moisture entransy, moisture entransy dissipation, and the thermal resistance in terms o...

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