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Search Results: 1 - 10 of 16677 matches for " Xiaohua Qi "
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Effect of Different Cover Cultivations in Later Summer on Aroma Constituents of Autumn Tea (Camellia sinensis L.)  [PDF]
Min Liu, Fucan Xie, Renrong Cao, Xiaohua Qi, Xuehao Chen
Journal of Agricultural Chemistry and Environment (JACEN) , 2014, DOI: 10.4236/jacen.2014.34B001
Abstract:

Tea plants grown under sunshade net and greenhouse are new methods for coping with high- temperature stress in later summer in middle and south China. Aroma is one of the most important flavors and qualities of tea. In this research the cultivar “Longjing-changye” (LJCY) was grown under sunshade net, greenhouse and open field as treatments to study the changes of aromatic substances by using Head Space Solid Phase-microextraction and Gas Chromatography-Mass Spectrometry (HS-SPME/GC-MS). The results showed that tea plants grown under sunshade net and greenhouse had higher content of aroma substances in autumn tea. Those growing conditions are good for improving the contents of the ester and geraniol with floral and fruity fragrance in autumn tea. Moreover, overshadowing in summer is helpful to improve fragrance of fresh tea leaves quality in autumn tea, particularly the 50% sunshade net.

The Traveling Wave Solutions of Space-Time Fractional Differential Equation Using Fractional Riccati Expansion Method  [PDF]
Xiaohua Liu
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.610167
Abstract: In this paper, we firstly give a counterexample to indicate that the chain rule \"\" is lack of accuracy. After that, we put forward the fractional Riccati expansion method. No need to use the chain rule, we apply this method to fractional KdV-type and fractional Telegraph equations and obtain the tangent and cotangent functions solutions of these fractional equations for the first time.
Analysis of Alphalactalbumin and Betalactoglobulin from the Rehydration of Bovine Colostrum Powder Using Cloud Point Extraction and Mass Spectrometry
Fan Zhang,Xiaohua Qi,Mingqiang Zou,Jinfeng Li
Journal of Analytical Methods in Chemistry , 2012, DOI: 10.1155/2012/816180
Abstract: Alphalactalbumin (α-La) and betalactoglobulin (β-Lg) in the rehydration of bovine colostrum powder were successfully separated by cloud point extraction using a nonionic surfactant Triton X-114. The effects of different factors, including the surfactant concentration, sample volume, electrolyte, and pH were discussed. The optimized conditions for cloud point extraction of alphalactalbumin (α-La) and betalactoglobulin (β-Lg) can be concluded that the best surfactant is 1% (w/v) Triton X-114, 200 μL of sample volume, 150 mmol/L NaCl, and 6% (w/v) sucrose. After cloud point extraction, the capillary electrophoresis is used to check the efficiency of the extraction procedure. The results had been effectively confirmed by the characterization with matrix-assisted laser desorption ionization time of flight mass spectrometry (MALDI-TOF MS). 1. Introduction Bovine colostrum is an opaque white liquid which is a natural source of nutrition. Five main components in bovine colostrum are water, fats, proteins (e.g., caseins, albumins, and globulins), sugars (essentially lactose), and mineral salts. Since bovine colostrum spoils easily, it is sometimes processed into dairy products. The most durable form of bovine colostrum is bovine colostrum powder, which is produced by the dehydration of raw bovine colostrum. In developing countries, bovine colostrum powder is an important source of proteins in people’s daily lives. Casein and whey proteins differ mainly in hydrophobicity and abundance. Casein is the major protein in cow’s milk, and comprises about 80% of the total protein content of which the rest, 20%, are the whey or serum protein [1, 2]. Whey proteins display different structural characteristics and aminoacid compositions, with high nutritional level. Whey proteins contain alphalactalbumin (α-La), betalactoglobulin (β-Lg), immunoglobulin, lactoferrin, and bovine serum albumin [3]. Alphalactalbumin (α-La) and betalactoglobulin (β-Lg) are two kinds of whey protein in bovine colostrum and specifically produced in the mammary epithelial cells only during lactation [4]. As a monomer, alphalactalbumin (α-La) and betalactoglobulin (β-Lg) strongly bind calcium and zinc ions and may possess bactericidal or antitumor activity [5]. High-effect capillary electrophoresis (HPCE), namely, capillary electrophoresis (CE) is a rapid analytical technology. This technology already has applied to protein and aminofacid broadly for many years. Due to the appealing advantages in separation efficiency and resolution, small amounts of solvent and sample, CE have rapidly been applied
Analysis of Rutin from Lespedeza virgata (Thunb.) DC. by Microwave-Assisted Extraction and Capillary Electrophoresis
Fan Zhang,Xiaohua Qi,Mingqiang Zou,Jinfeng Li
Journal of Chemistry , 2013, DOI: 10.1155/2013/324294
Abstract:
Monophasic Epithelial Synovial Sarcoma Accompanied by an Inverted Papilloma in the Sphenoid Sinus
Xiaohua Jiang,Qi Huang,Jianguo Tang,Matthew R. Hoffman
Case Reports in Medicine , 2012, DOI: 10.1155/2012/379720
Abstract:
Monophasic Epithelial Synovial Sarcoma Accompanied by an Inverted Papilloma in the Sphenoid Sinus
Xiaohua Jiang,Qi Huang,Jianguo Tang,Matthew R. Hoffman
Case Reports in Medicine , 2012, DOI: 10.1155/2012/379720
Abstract: A 58-year-old man presented with a six-month history of intermittent blood-stained posterior nasal discharge. Five years ago, he had a three-week episode of fitful light headaches. Nasal ventilation, olfactory sensation, and facial sensation were normal; there were no ophthalmological complaints. Coronal computed tomography (CT) scans revealed soft masses in the bilateral sphenoid sinuses with bone absorption. The patient underwent bilateral functional endoscopic sinus surgery and resection of right nasal papillary masses. Papillary masses and mucosa in both sphenoid sinuses were also removed. The mass in the left sphenoid sinus was diagnosed as two separate entities, one being a primary monophasic epithelial synovial sarcoma and the other an inverted papilloma, while the mass in the right sphenoid sinus was an inverted papilloma. After surgery, the patient underwent radiotherapy and chemotherapy. At the 50-month follow-up visit, there were no signs of recurrence. 1. Introduction Synovial sarcoma (SS) accounts for approximately 8% of all soft tissue sarcomas and is the fourth most common type of sarcoma. SS can occur anywhere in the body, but it most often occurs in the paraarticular areas of the lower extremities. The head and neck region is the second most common site of involvement, accounting for up to 10% of cases [1]. To our knowledge, there is one report in the biomedical literature describing primary monophasic fibrous synovial sarcoma (MFSS) in the sphenoid sinus [2]. We report the first case of primary monophasic epithelial synovial sarcoma (MESS) in the sphenoid sinus; this sarcoma was part of a mass in one cell of the sphenoid sinus which was comprised of two separate parts, one being the synovial sarcoma and the other being an inverted papilloma. This case report was approved by the institutional review board and ethics committee of the Sir Run Run Shaw Hospital. 2. Case Report A 58-year-old Chinese man visited our department complaining of intermittent blood-stained posterior nasal discharge for six months and a three-week episode of fitful light headaches, which occurred five years ago. The patient reported normal nasal ventilation, olfactory sensation, and facial sensation. He had no ophthalmological complaints. Physical examination showed a polypoid mass in the left middle nasal meatus and a papillary mass in the right posterior olfactory cleft. No enlargement of the cervical lymph nodes was discovered. Coronal computed tomography (CT) scans of the sinuses demonstrated soft masses in the posterior ethmoid sinuses and bilateral sphenoid
Determinants of Childhood Immunization Uptake among Socio-Economically Disadvantaged Migrants in East China
Yu Hu,Qian Li,Enfu Chen,Yaping Chen,Xiaohua Qi
International Journal of Environmental Research and Public Health , 2013, DOI: 10.3390/ijerph10072845
Abstract: Objective: To determine the coverage of childhood immunization appropriate for age among socio-economically disadvantaged recent migrants living in East China and to identify the determinants of full immunization uptake among these migrant children. Methods: This is a cross-sectional survey of 1,426 migrant mothers with a child aged ≤24 months, who were interviewed with a pretested questionnaire. Various vaccines, migration history and some other social-demographic and income details were collected. Single-level logistic regression analyses were applied to identify the determinants of full immunization status. Results: Immunization coverage rates are lower among migrants and even lower among recent migrants. The likelihood of a child receiving full immunization rise with parents’ educational level and the frequency of mother’s utilization of health care. Higher household income also significantly increase the likelihood of full immunization, as dose post-natal visits by a health worker. Conclusions: Recent migrant status favours low immunization uptake, particularly in the vulnerability context of alienation and livelihood insecurity. Services must be delivered with a focus on recent migrants. Investments are needed in education, socio-economic development and secure livelihoods to improve and sustain equitable health care services.
Controlling Bovine Serum Albumin Release From Biomimetic Calcium Phosphate Coatings  [PDF]
Xiaohua Yu, Mei Wei
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2011, DOI: 10.4236/jbnb.2011.21004
Abstract: Biomimetic calcium phosphate (CaP) coating has been used successfully for protein delivery, but the release of protein from CaP coating is mainly dependent on the limited dissolution of the CaP coating and the passive diffusion of the protein in the CaP coating. In the present work, our aim is to improve the release behavior of protein from CaP coating and make it more controllable. By using bovine serum albumin (BSA) as a model protein, our strategy is to tailor BSA release profiles by controlling the distribution of BSA in CaP coatings. To achieve this aim, BSA was added to a modified simulated body fluid (m-SBF) at different stages of coating formation to obtain tailored BSA release profiles. Sustained BSA release was obtained when BSA was added to m-SBF at the initial stage of the coating where the BSA was incorporated into the lattice structure of the coating. In contrast, a relatively faster release was observed when BSA was added during the later stage of coating formation where BSA was mainly adsorbed to the coating surface. As a result, the BSA release efficiency could be tailored by adding BSA into m-SBF at different coating formation stages. More importantly, the coating composition was not altered with the change of BSA adding times and all the beneficial properties of the biomimetic coating were reserved. Therefore, the BSA release from CaP coatings can be tailored by adjusting its distribution in the coating to achieve a more satisfactory release profile.
Based on ODE and ARIMA Modeling for the population of China  [PDF]
Xiaohua Hu, Min Yu
Technology and Investment (TI) , 2013, DOI: 10.4236/ti.2013.41B006
Abstract: The economic data usually can be also composed into a deterministic part and a random part. We establish ordinary differential equations (ODE) model for the deterministic part from a purely mathematical point of view, via the prin-ciple of integral and difference, establishing ()ARIMApdq,, model for the random part, to combine the two estab-lished models to predict and control the original series, then we apply the method to study the population of China from 1978 to 2007, establishing the corresponding mathematical model, to obtain the forecast data of the population of China in 2008(1.3879503 billion), finally we make further stability analysis.
The COP9 Signalosome Controls Adipocyte Differentiation by Regulating CHOP Protein Stability  [PDF]
Xiaohua Huang, Wolfgang Dubiel
Engineering (ENG) , 2012, DOI: 10.4236/eng.2012.410B050
Abstract:

Obesity is a serious health problem of our time. Dysfunction of adipogenesis, the differentiation of adipocytes, is a hallmark of obesity. Therefore here we investigate the role of the COP9 signalosome and of CHOP in the differentiation of LiSa-2 preadipocytes.

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