A plant-specific tau class glutathione S-transferase from Oryza sativa with very high activity against 1-chloro-2,4-dinitrobenzene and chloroacetanilide herbicides

2011 ◽  
Vol 101 (3) ◽  
pp. 265-269 ◽  
Author(s):  
Hyun-Joo Jo ◽  
Jin-Ju Lee ◽  
Kwang-Hoon Kong
Keyword(s):  
Oryza Sativa ◽  
High Activity ◽  
Glutathione S Transferase ◽  
Chloroacetanilide Herbicides ◽  
Very High

Acid and alkaline phosphatases in the lymphomyeloid tissues of elasmobranch fish

1978 ◽  
Vol 58 (3) ◽  
pp. 727-730 ◽  
Author(s):  
Ragnar Fänge
Keyword(s):  
Alkaline Phosphatase ◽  
Acid Phosphatase ◽  
High Activity ◽  
Phosphatase Activity ◽  
Acid Phosphatase Activity ◽  
Alkaline Phosphatases ◽  
Large Numbers ◽  
Alkaline Reaction ◽  
Elasmobranch Fish ◽  
Very High

Activities of phosphomonoesterases were measured at acid and at alkaline reaction (pH 4–5 or 9–65) in homogenates of elasmobranch tissues especially lymphomyeloid structures. The animals were dogfish (Scyliorhinus caniculd) and two species of ray (Raja brachyura, R. naevus). Acid phosphatase activity was high in the epigonal tissue, Leydig's organ, the spleen and the thymus. High activity was also found in the pancreas and the kidney, whereas skeletal and cardiac muscle showed low values. The activity of alkaline phosphatase was very high in the kidney and relatively low in other tissues. Ultrasonification of homogenates from the dogfish resulted in increase of acid phosphatase activity but had little effect on alkaline phosphatase activity. The high activity of acid phosphatase in lymphomyeloid tissue may be due to the presence of large numbers of various types of leucocytes.

scholarly journals Maximizing sinusoidal channels of HZSM-5 for high shape-selectivity to p-xylene

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Chuanfu Wang ◽  
Lei Zhang ◽  
Xin Huang ◽  
Yufei Zhu ◽  
Gang (Kevin) Li ◽  
...  
Keyword(s):  
High Activity ◽  
Chemical Industry ◽  
Chemical Separation ◽  
Shape Selectivity ◽  
Toluene Alkylation ◽  
Shape Selective ◽  
Toluene Methylation ◽  
Selective Catalysis ◽  
The Cost ◽  
Very High

Abstract The shape-selective catalysis enabled by zeolite micropore’s molecular-sized sieving is an efficient way to reduce the cost of chemical separation in the chemical industry. Although well studied since its discovery, HZSM-5′s shape-selective capability has never been fully exploited due to the co-existence of its different-sized straight channels and sinusoidal channels, which makes the shape-selective p-xylene production from toluene alkylation with the least m-xylene and o-xylene continue to be one of the few industrial challenges in the chemical industry. Rather than modifications which promote zeolite shape-selectivity at the cost of stability and reactivity loss, here inverse Al zoned HZSM-5 with sinusoidal channels predominantly opened to their external surfaces is constructed to maximize the shape-selectivity of HZSM-5 sinusoidal channels and reach > 99 % p-xylene selectivity, while keeping a very high activity and good stability ( > 220 h) in toluene methylation reactions. The strategy shows good prospects for shape-selective control of molecules with tiny differences in size.

scholarly journals Hotspots: are some areas of sewer network prone to re-infestation by rats (Rattus norvegicus) year after year?

2005 ◽  
Vol 134 (1) ◽  
pp. 41-48 ◽  
Author(s):  
D. CHANNON ◽  
E. CHANNON ◽  
T. ROBERTS ◽  
R. HAINES
Keyword(s):  
High Activity ◽  
Rattus Norvegicus ◽  
Water Utilities ◽  
London Borough ◽  
Ordnance Survey ◽  
Weighted Analysis ◽  
Sewer Network ◽  
Very High

SUMMARYThe records of sewer baiting work for three London boroughs were examined to see whether there were locations that exhibited ‘rat’ (Rattus norvegicus) activity more often than would be expected by chance, a feature we dubbed ‘hotspots’. More than 100 000 baiting records were checked covering 15 years of the London Borough of Enfield (Enfield) and 5 years each of the London Borough of Barnet (Barnet), and the Royal Borough of Kensington and Chelsea (RBKC). The additional boroughs were included for comparison to see whether any effect observed was confined to Enfield or was a feature that could be found in both inner and outer city locations. Each borough was divided into kilometre squares corresponding with those found both on Ordnance Survey maps and also Thames Water Utilities Asset maps. The number of records per square were logged and then the number of positive records for all the manholes in that square on a year-on-year basis. We examined 350 km2 in Enfield, 377 km2 in Barnet and 66 km2 in RBKC. The data were subjected to a weighted analysis (i.e. allowing for the number of manholes per square and the varying total rat population from year to year). Some areas were shown to exhibit significantly higher amounts of activity than others suggesting that their distribution is not random and that there must be environmental and other factors, which make certain locations attractive to rats. Squares with very high activity, repeating year-on-year, ‘hotspots’, were found in all three boroughs, suggesting that the phenomena are widespread.

Thermal-Activation & Activity Analysis of Neimenggu High Alumina Coal Gangue

2012 ◽  
Vol 198-199 ◽  
pp. 9-13
Author(s):  
Hai Li Cheng ◽  
Fei Hua Yang ◽  
Jie Zhang ◽  
Yi Wang
Keyword(s):  
High Activity ◽  
Thermal Activation ◽  
Activity Analysis ◽  
Coal Gangue ◽  
High Alumina ◽  
Micro Structure ◽  
Cement Mortars ◽  
Activated Coal ◽  
Activated Coal Gangue ◽  
Very High

In this paper, the Neimenggu high alumina coal gangue was calcined at 400°C~1000°C, its micro-structure in different calcining temperature was studied using XRD and IR, and then the preferred activated condition and the PAI were investigated by testing the strength of cement mortars with activated coal gangue. The result shows that: the optimal calcining temperature of the gangue is 800°C, at this temperature the high activated SiO2 and AI2O3 can be decomposed from the gangue. The activity of the original gangue is very high, the PAI of the cement mortars with 800°C activated coal gangue can achieve to 126%, and thus can be used as high activity cement admixture. The PAI of the high alumina gangue is higher than that of coal gangue from other parts of China.

scholarly journals Nanomaterials as novel supports for the immobilization of amylolytic enzymes and their applications: A review

Biocatalysis ◽  
2017 ◽  
Vol 3 (1) ◽  
Author(s):  
Qayyum Husain
Keyword(s):  
High Activity ◽  
High Resistance ◽  
Active Site ◽  
Immobilized Enzyme ◽  
Amylolytic Enzymes ◽  
Enzyme Preparations ◽  
Paper And Pulp ◽  
Physical And Chemical ◽  
Very High ◽  
Steric Hindrances

AbstractNumerous types of nanoparticles and nanocomposites have successfully been employed for the immobilization and stabilization of amylolytic enzymes; α-amylases, β-amylases, glucoamylases and pullulanases. Nano-support immobilized amylolytic enzymes retained very high activity and yield of immobilization. The immobilization of these enzymes, particularly α-amylases and pullulanases, to the nanosupports is helpful in minimizing the problem of steric hindrances during binding of substrate to the active site of the enzyme. The majority of nano-support immobilized amylolytic enzymes exhibited very high resistance to inactivation induced by different kinds of physical and chemical denaturants and these immobilized enzyme preparations maintained very high activity on their repeated and continuous uses. Amylolytic enzymes immobilized on nano-supports have successfully been applied in food, fuel, textile, paper and pulp, detergent, environmental, medical, and analytical fields.

scholarly journals Some Lichen Products Have Antimicrobial Activity

1999 ◽  
Vol 54 (7-8) ◽  
pp. 605-609 ◽  
Author(s):  
J. Garcia Rowe ◽  
M. D. Garcia Gimenez ◽  
M. T. Saenz Rodriguez
Keyword(s):  
Antimicrobial Activity ◽  
High Activity ◽  
Usnic Acid ◽  
Chemical Methods ◽  
Gram Positive ◽  
Gram Positive Bacteria ◽  
Very High

Abstract Antimicrobial activity in some lichens from south Spain has been studied. Some lichenical substances are also identified. The structures of all compounds were elucidated by physical, spectral and chemical methods. A very high activity against Gram-positive bacteria has been observed in lichens containing usnic acid.

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