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Search Results: 1 - 10 of 37201 matches for " Kuan Yan "
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Study on Appraising of Benefit about Zoology for Land Consolidation in Nei Jiang City
Kuan Yan,Lei Wang
Journal of Sustainable Development , 2012, DOI: 10.5539/jsd.v5n6p57
Abstract: This article through establishes indicator-system of land arrangement assessment for ecological benefit at Baima town, land arrangement assessment for ecological benefit based on fuzzy comprehensive Assessment. The level is middling, the conclusion from land arrangement assessment for ecological benefit. The paper finally carries on the discussion on current land arrangements existence many questions, simultaneously proposed the land arrangements improvement measure.
Differences in the Mechanisms by Which Yang-Invigorating and Qi-Invigorating Chinese Tonifying Herbs Stimulate Mitochondrial ATP Generation Capacity  [PDF]
Pou Kuan Leong, Hoi Yan Leung, Wing Man Chan, Kam Ming Ko
Chinese Medicine (CM) , 2018, DOI: 10.4236/cm.2018.92005
Abstract:

According to Chinese medicine theory, Yang/Qi plays a pivotal role in driving physiological functions in the body, these being highly dependent on mitochondrial ATP production. Consistent with this, Yang/Qi-invigorating Chinese tonifying herbs have been found to stimulate mitochondrial ATP generation capacity (ATP-GC) in H9c2 cardiomyocytes. In the present study, we have demonstrated that Yang-invigorating Chinese tonifying herbs (namely, Eucommiae Cortex, Cibotii Rhizoma, Dipsaci Radix, Cynomorii Herba, Cistanches Herba, Cuscutae Semen, EpimediiHerba and Morindae Radix) and Qi-invigorating Chinese tonifying herbs (namely, Ginseng Radix, Pseudostellariae Radix, Quinquefolii Radix, Codonopsis Radix, Astragali Radix, Atractylodis Rhizoma, Juiubae Fructus, Fici Simplicissimae Radix and Dioscoreae Oppositae Radix) act by different mechanisms to stimulate mitochondrial ATP-GC. While Yang-invigorating herbs fluidize mitochondrial membranes and thus stimulate ATP-GC, Qi-invigorating herbs can enhance cellular glutathione status and increase ATP-GC. The different mechanisms by which Yang-invigorating herbs and Qi-invigorating herbs stimulate mitochondrial ATP-GC may serve as the basis for establishing biomarkers for Yang/Qi-invigorating herbs and herbal health products in general.

Effects of Different Inducer on the Accumulation of Essential Oil from Endophytic Fungi of Cinnamomum longepaniculatum  [PDF]
Kuan Yan, Ping Yuan, Qin Wei
Open Access Library Journal (OALib Journal) , 2019, DOI: 10.4236/oalib.1105337
Abstract:
The aim of this study was to investigate the effect of different inducer on the accumulation of essential oil in C. longepaniculatum endophytic fungus. The effect of the essential oil accumulation in the C. longepaniculatum fungus was studied by adding different inducer with an C. longepaniculatum endophytic fungus (serial number 2J1) with the ability of producing essential oil. The results show that the accumulation of essential oil can be greatly promoted by adding CaSO4 1.5 mg/L, H2O2 9 mmol/L, SA 15 mg/L and MnSO4 3 mmol/L in the PDB medium; compared with CK in the same condition increased 75.56%, 47.18%, 38.35%, 53.95% respectively; reached 0.0934 mg/L, 0.0783 mmol/L, 0.0736 mmol/L, 0.0819 mg/L; through the orthogonal experiment, the combinations 2.0 mg/L CaSO4, 12 mmol/L H2O2, 5 mg/L SA and 7 mmol/L MnSO4 were significantly different from other combinations; the yield reached 0.1847 mg/L and increased by 247.18%, indicating that adding inducer was an effective way to promote the accumulation of essential oil of endophytic fungi. This provides a reference for the artificial regulation of the secondary metabolites of C. longepaniculatum and the enhancement of subsequent microorganisms.
Long-Term Treatment with an Herbal Formula MCC Reduces the Weight Gain in High Fat Diet-Induced Obese Mice  [PDF]
Pou Kuan Leong, Hoi Yan Leung, Hoi Shan Wong, Jihang Chen, Chung Wah Ma, Yiting Yang, Kam Ming Ko
Chinese Medicine (CM) , 2013, DOI: 10.4236/cm.2013.43010
Abstract:

Obesity is a risk factor for metabolic disorders, with its prevalence being increased in the world over the past several decades. Therapeutical interventions for obesity are thus urgently needed. In the present study, we investigated the effect of long-term treatment (0.51 and 5.1 g/kg/day, 5 days per week for a total of 40 doses) with an herbal formula MCC [which comprises the fruit of Momordica charantia (MC), the pericarpium of Citri reticulata and L-carnitine] in normal diet (ND) and high fat diet (HFD)-fed female ICR mice. Body weight change was monitored during the course of the experiment. Fat pad indices, plasma glucose and lipid contents, as well as metabolic enzyme activities and mitochondrial coupling efficiency in skeletal muscle were measured at 24 hours after the last dosing. Results showed that HFD increased the body weight, fat pad indices, plasma glucose and lipid contents as well as β-hydroxyacyl-Co A dehydrogenase (β-HAD) and carnitine palmitoyl CoA transferase (CPT) activities in skeletal muscle. However, the phosphofructokinase (PFK) activity was decreased in skeletal muscle. MCC treatment reduced the HFD-induced increases in body weight, fat pad indices and plasma lipid contents. MCC treatment only partially reversed the HFD-induced changes in β-HAD and CPT activities, but did not restore the HFD-induced decrease in PFK activity. MCC did not alter the plasma glucose level and mitochondrial coupling efficiency in skeletal muscle of ND and HFD-fed mice. Since MCC formula did not increase activities of energy metabolic enzymes or induce mitochondrial uncoupling, the weight loss effect of MCC is likely related to the reduction of intestinal lipid absorption in HFD-fed

Advanced Measuring (Instrumentation) Methods for Nuclear Installations: A Review
Wang Qiu-kuan,Lin Chang-hua,Yang Yan
Science and Technology of Nuclear Installations , 2012, DOI: 10.1155/2012/672876
Abstract: The nuclear technology has been widely used in the world. The research of measurement in nuclear installations involves many aspects, such as nuclear reactors, nuclear fuel cycle, safety and security, nuclear accident, after action, analysis, and environmental applications. In last decades, many advanced measuring devices and techniques have been widely applied in nuclear installations. This paper mainly introduces the development of the measuring (instrumentation) methods for nuclear installations and the applications of these instruments and methods. 1. Introduction In last decade, nuclear technology has developed rapidly and became more important to human society with the development of science and technology. Nuclear technology has many advantages, such as zero carbon emissions, energy independence, and safety. At present, nuclear installations are more prevalent than ever before. Therefore, with the rapid development and wide applications of nuclear technology, many new technologies have been emerging to guarantee its reliability and safety, where measuring devices and techniques that can exactly measure and monitor the nuclear installations show particular importance. This paper is a review of advances in measuring (instrumentation) technology focus areas that have applications in nuclear installations. The instruments used in nuclear installations mainly include multifarious detectors, sensors, and meters. The measurement methods for nuclear technology mostly consist of all kinds of nondestructive measurement methods. The paper presents various instruments and measurement methods which are widely used in nuclear power reactors, nuclear fuel cycle, safeguards and homeland security, nuclear accident, after action, and analysis. 2. Nuclear Power Reactors 2.1. Nuclear Power Reactors Instrumentations In this section, instrumentations to measuring the neutron fission, the neutron dose, the flux, the reactor fission rate, and temperature are discussed. Here instrumentations contain Micro-Me-gas detectors, noise thermometer, tissue equivalent proportional counter, high-temperature thermocouples, liquid scintillation detector, spectrometers, optical fiber sensors, Uranium Fission chamber, Plutonium Fission chamber, Self-Powered Neutron Detector, Ionization chamber, Self-Powered Gamma Detector, Differential calorimeter, Gamma Thermometer, and Optical Fiber Sensors, and so forth. A new set-up at the Conseil Europeen pour la Recherche Nucleaire (CERN) n_TOF facility has been built and tested by Guerrero et al. which allowed measuring simultaneously neutron,
Poly[μ-chlorido-[μ4-5-(4-pyridyl)tetrazolato]dicopper(I)]
Cun-Kuan Wang,Xiao-Yan Li
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809006564
Abstract: The title three-dimensional coordination polymer, [Cu2Cl(C6H4N5)]n, is the product of the hydrothermal reaction of CuCl2·2H2O and 5-(4-pyridyl)-1H-tetrazole (4-Hptz). The two independent CuI ions are coordinated in distorted tetrahedral and distorted trigonal coordination environments. In the unique 5-(4-pyridyl)-1H-tetrazolate ligand, the dihedral angle between the pyridine and tetrazole rings is 17.3 (2)°.
1,3-Dicyclohexyl-1-isonicotinoylurea monohydrate
Cun-Kuan Wang,Feng-Yan Zhou
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808019430
Abstract: The title organic compound, C19H27N3O2·H2O, was synthesized from methylene dicyclohexylamine, 4-pyridinecarboxylic acid and N,N′-dicyclohexylcarbodiimide. The water molecule is involved in intermolecular hydrogen bonds, linking symmetry-related urea molecules into a two-dimensional supramolecular ladder-like structure.
Synthesis of Large Planar Thinned Arrays Using IWO-IFT Algorithm
Xin-Kuan Wang;Yong-Chang Jiao;Yan Liu;Yan Yan Tan
PIER , 2013, DOI: 10.2528/PIER12102001
Abstract: The iterative Fourier technique (IFT) is a high efficiency method that was proposed in recent past for the synthesis of large planar thinned arrays with isotropic radiating elements. However, the selection mechanism of IFT cannot always include the most useful elements in the “turned ON” families, which make the method trap in some local minima. Therefore, in this paper, inspired by invasive weed optimization (IWO) algorithm, a developed version of the iterative Fourier technique (IFT), IWO-IFT, is proposed for thinning large planar arrays. In this new method, the initial weeds are produced by IFT, and are further perturbed by IWO through repeatedly reproduction, dispersion, and exclusion over search space to find better weeds. Numerical results for synthesizing different circular thinned arrays demonstrated the superiority of IWO-IFT over the IFT method.
Long-Term Treatment with an Herbal Formula MCC Ameliorates Obesity-Associated Metabolic Dysfunction in High Fat Diet-Induced Obese Mice: A Comparative Study among MCC and Various Combinations of Its Constituents  [PDF]
Pou Kuan Leong, Hoi Yan Leung, Hoi Shan Wong, Ji Hang Chen, Wing Man Chan, Chung Wah Ma, Yi Ting Yang, Kam Ming Ko
Chinese Medicine (CM) , 2014, DOI: 10.4236/cm.2014.51005
Abstract:

Obesity has been found to be associated with increased incidence of various metabolic disorders. Anti-obesity interventions are therefore urgently needed. An earlier study has demonstrated that treatment with an herbal formula MCC, which comprises the fruit of Momordica charantia (MC), the pericarpium of Citri reticulate (CR) and L-carnitine (CA), reduced the weight gain in high fat diet (HFD)-fed mice. In the present study, we investigated the effect of long-term treatment with MCC (6 g/kg/day × 40 doses) and various combinations of its constituents in HFD-fed female ICR mice. Body weight change was monitored during the course of the experiment. Total and differential adiposity, plasma lipid contents, metabolic enzyme activities and mitochondrial coupling efficiency in skeletal muscle were measured. Glucose homeostasis was also assessed. Results showed that HFD increased the body weight, total and differential adiposity, and plasma lipid contents as well as impaired metabolic status in skeletal muscle and glucose homeostasis. MCC and all combinations of its constituents reduced the weight gain in HFD-fed mice, which was accompanied with an improvement on glucose homeostasis. While MC, CA and CR independently suppressed the HFD-induced weight gain in mice, MC seems to be the most effective in weight reduction, all of which correlated with the induction of mitochondrial uncoupling in skeletal muscle. Only CA and CR, but not MC, significantly reduced the total adiposity and visceral adiposity as well as plasma cholesterol level. However, the two component combinations, MC + CR and MC + CA, decreased the degree of visceral adiposity and plasma cholesterol level, respectively. MCC treatment at 1.5 g/kg (but not a higher dose of 6 g/kg) suppressed visceral adiposity and induced mitochondrial uncoupling in skeletal muscle in HFD-fed mice. The finding suggests that MCC may offer a promising prospect for ameliorating the diet-induced obesity and metabolic disorders in humans.

Acute and Long-Term Treatments with an Herbal Formula V-Vital Capsule Increase Exercise Endurance Capacity in Weight-Loaded Swimming Mice  [PDF]
Pou Kuan Leong, Hoi Yan Leung, Wing Man Chan, Ji Hang Chen, Hoi Shan Wong, Chung Wah Ma, Shi Yu Zou, Kam Ming Ko
Chinese Medicine (CM) , 2014, DOI: 10.4236/cm.2014.53019
Abstract:
Fatigue is a self-limiting response arising from physical and/or mental weariness, with a consequent personal and economic morbidity on work performance and social relationships. Anti-fatigue intervention is therefore urgently sought. “Qi-invigorating” Chinese tonic herbs, which can improve the energy status in the body according to the theory of traditional Chinese medicine, may produce beneficial effects in fatigue individuals. The herbal formula V-Vital capsule (VVC), which comprises 3 “Qi-invigorating” herbs, namely the root of Rhodiola rosea, Eleutherococcus senticosus and Panax quinquefolium, may produce anti-fatigue effect. In the present study, we investigated the effect of acute/long-term VVC treatment (acute: 0.75, 0.2 and 3.75 kg/day × 1 dose; long-term: 0.075 and 0.25 g/kg/day × 14 doses) on weight-loaded swimming female ICR mice. The weight-loaded swimming time until exhaustion, indicative of exercise endurance capacity, was recorded. Plasma levels of glucose, non-esterified fatty acid (NEFA), lactate and reactive oxygen metabolites (ROM) were measured in the exhausted mice. Glycogen levels in skeletal muscle and liver tissues were also measured. Mitochondrial function status [such as adenine nucleotide translocase (ANT) activity and coupling efficiency] was assayed. Results showed that acute VVC treatment increased the exercise endurance capacity in weight-loaded swimming mice. The ability of acute VVC treatment to enhance the exercise endurance was associated with increases in plasma glucose levels as well as glycogen levels in skeletal muscles and liver tissues, presumably due to the utilization of plasma lactate for gluconeogenesis and/or glycogen synthesis in the liver. While acute VVC treatment reduced the plasma ROM level in weight-loaded swimming mice, it increased the ANT activity. In this regard, the enhancement in exercise endurance afforded by acute VVC treatment might be due to an increase in the glucose supply to the skeletal muscle, the amelioration of systemic oxidative stress and the improvement in mitochondrial function of skeletal muscle.
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