Biological indicators

In the case of length weight relationship (LWR), the coefficient of determination value (r2 ) was found 0.96 and the slope was found b = 1.50 which indicated the pattern of negative allometric growth of this species as b < 3. In contrast, an increase was recorded in the fecundity associated with the rise of total length, body weight and gonad weight showed a significant linear relationship. This study would assist in the development of induced breeding techniques and provide valuable information for the sustainable management of this population in the inland open ecosystem.

11p dianmotminh02 03-05-2024 6 2   Download

Municipal wastewater treatment plants generally utilise biological activated sludge processes to remove organic compounds and nitrogen. The biological nitrogen removal (BNR) occurs in two steps, nitrification (ammonium removal) and denitrification (nitrates removal). This study focused on a medium-sized wastewater treatment plant (WTP) which experienced poor nitrification for years, mainly when the weather temperature drops.

125p runthenight07 01-03-2023 7 3   Download

Polyhydroxyalkanoate (PHA) is stored as an important carbon and energy source in bacterial cells. For biomedical applications, gram-positive bacteria can be better sources of PHAs, since they lack outer membrane lipopolysaccharide. Although gram-positive Streptomyces coelicolor A3(2) has been indicated as a high potential PHA producer, phaC gene that encodes the key enzyme PHA synthase in the metabolic pathway is not determined in its genome.

12p thiencuuchu 27-11-2021 18 2   Download

Identify biological characteristics, some indicators of physiological and biochemical blood and urine of civets in captivity; determine the change in sex hormones of female civets and evaluate the effect of sexual stimulation on the fertility of civets in captivity in order to preserve herd in the direction of quantity development.

27p larachdumlanat129 20-01-2021 23 3   Download

The Ryanodine Receptor-1 gene (RYR-1) is located in the 6p11 → q21 region on the No. 6 chromosome of pigs. RYR-1 is being investigated in several studies as a potentially important gene that is an indicator of pork quality. In this article, PCR-RFLP was used to analyze RYR-1 polymorphism in 19 Mong Cai pigs, 2 Yorkshire pigs and their 64 F1 generation pigs.

8p tamynhan8 04-11-2020 13 2   Download

An understanding of soil microorganisms as part of soil system and interactions between the diversity of producers and of decomposers, have major consequences on the functioning of agricultural ecosystems. Soil microorganisms control the transformation and mineralization of natural compounds and xenobiotics. The soil micro biota, existing in high density and diversity, rapidly modify the energetic performance and activity rates to changing environmental conditions.

9p nguaconbaynhay6 24-06-2020 20 1   Download

The estimates of genotypic correlation coefficients in general were higher than their corresponding phenotypic correlation coefficients indicating strong inherent association among the traits. The seed yield per plant had significant and positive association with number of primary branches plant-1, number of secondary branches plant-1 , number of pods plant-1 , number of seeds plant-1 , biological yield plant-1 , seed yield (kg/ha) harvest index and 100-seed weight at both genotypic as well as phenotypic levels.

7p gaocaolon5 14-06-2020 22 2   Download

The study has indicated that MOFs has maintained extensive applications in Biological imaging and sensing, Drug delivery systems, Methane storage, Semiconductors, Bio-mimetic mineralization, Carbon capture, Desalination/ion separation, Water vapor capture and Ferroelectrics and Multiferroics.

20p tocectocec 25-05-2020 20 1   Download

A green and simple approach has been successfully developed to synthesize chitosan/Ag nanocomposites using kumquat extract as a biological reducing agent. It indicates to be an ecofriendly and green method for the synthesis providing a cost effective and an efficient route for the chitosan/Ag nanocomposites’ synthesis. The prepared chitosan/Ag nanocomposites have been characterized by UV-vis, TEM, FTIR, and XRD. Result showed those chitosan/Ag nanocomposites have been obtained with average particle size ~15-25 nm.

10p abcxyz123_02 03-03-2020 28 2   Download

The genus Litsea Lam. (Lauraceae) and Lepisanthes Blume (Sapindaceae) are wildly distributed in Vietnam, especially in the mountainous areas. The reports in the literatures indicated that these two genus contain many constituents with interesting structures and potential biological activities. In order to find interesting substances for development of new pharmaceutical ingredients or functional food products we would like to conduct the resarch thesis ‘‘Study on Chemical constituents and biological activities of Litsea glutinosa (Lour.) Rob. (Lauraceae) and Lepisanthes rubiginosa (Roxb.

26p xacxuoc4321 11-07-2019 29 6   Download

This chapter list the steps involved in preparing animal tissue for microscopic viewing; list several structural and functional characteristics of epithelial tissue; name, classify, and describe the various types of epithelia, and indicate their chief function(s) and location(s).

29p tangtuy07 02-04-2016 45 3   Download

Connective tissue is the most abundant and widely distributed of the primary tissues, but its amount in particular organs varies. For example, skin consists primarily of connective tissue, while the brain contains very little. This chapter provides knowledge of connective tissue, indicate common characteristics of connective tissue, and list and describe its structural elements.

48p tangtuy07 02-04-2016 40 2   Download

Chapter 7 - The skeleton (part b) provides knowledge of vertebral column and thoracic cage. This chapter describe the structure of the vertebral column, list its components, and describe its curvatures; indicate a common function of the spinal curvatures and the intervertebral discs; name and describe the bones of the thoracic cage (bony thorax); differentiate true from false ribs.

35p tangtuy07 02-04-2016 39 3   Download

Chapter 13 - The peripheral nervous system and reflex activity (part b). This chapter define ganglion and indicate the general body location of ganglia, describe the general structure of a nerve, follow the process of nerve regeneration, name the 12 pairs of cranial nerves, indicate the body region and structures innervated by each.

30p tangtuy07 02-04-2016 50 3   Download

The K103N substitution is a frequently observed HIV-1 RT mutation in patients who do not respond to combinationtherapy. The drugs Efavirenz, MSC194 and PNU142721 belong to the recent generation of NNRTIs characterized by an improved resistance profile to the most common single point mutations within HIV-1 RT, including the K103N mutation. In the present study we present structural observations from Efavirenz in complex with wild-type protein and the K103N mutant and PNU142721 and MSC194 in complex with the K103N mutant.

8p system191 01-06-2013 41 4   Download

In the biosynthesis of the antiarrhythmic alkaloid ajmaline, polyneuridine aldehyde esterase (PNAE) catalyses a central reaction by transforming polyneuridine aldehyde into epivellosimine, which is the immediate precursor for the synthesis of the ajmalane skeleton. The PNAE cDNA was previously heterologously expressed in E. coli. Sequence alignments indicated that PNAE has a 43% identity to a hydroxynitrile lyase from Hevea brasiliensis, which is a member of the a/b hydrolase superfamily. The catalytic triad, which is typical for this family, is conserved.

8p system191 01-06-2013 35 4   Download

Mitochondrial functional and structural impairment and generation of oxidative stress have been implicated in aging, various diseases and chemotherapies. This study analyzed azidothymidine (AZT)-caused failures in mitochondrial functions, in redox regulation and activation of the HIV-1 gene expression. We monitored intracellular concentrations of ATP and glutathione (GSH) as the indicators of energy production and redox conditions, respectively, during the time-course experiments with U937 and MOLT4 human lymphoid cells in the presence of AZT (0.05 mgÆmL)1) or H2O2 (0.01 mM) for 15–25 days.

7p system191 01-06-2013 42 3   Download

Stress-activated protein kinase (SAPK) signaling plays essential roles in eliciting adequate cellular responses to stresses and proinflammatory cytokines. SAPK pathways are composed of three successive protein kinase reactions. The phosphorylation of SAPK signaling components on Ser/Thr or Thr/Tyr residues suggests the involvement of various protein phosphatases in the negative regulation of these systems.

7p research12 01-06-2013 54 4   Download

The interaction between the c11ring and thececomplex, forming the rotor of theIlyobacter tartaricus ATP synthase, was probed by surface plasmon resonance spectroscopy andin vitro reconstitution analysis. The results pro-vide, for the first time, a direct and quantitative assessment of the stability of the rotor. The data indicated very tight binding between the c11ring and the cecomplex, with an apparent Kd value of approximately 7.4 nm.

13p research12 29-04-2013 46 3   Download

The human multidrug resistance protein 2 (MRP2, symbol ABCC2) is a polytopic membrane glycoprotein of 1545 amino acids which exports anionic conjugates across the apical membrane of polarized cells. A chimeric protein composed of C-proximal MRP2 and N-proximal MRP1 localized to the apicalmembraneof polarizedMadin±Darby canine kidney cells (MDCKII) indicating involvement of the carboxy-proximal part of human MRP2 in apical sorting.

11p research12 23-04-2013 31 2   Download