bluuebunny/crossref_metadata_2025_split huggingface dataset:
iTRAQ‐Based Proteomics Reveals that the Tomato ms1035 Gene Causes Male Sterility through Compromising Fat Acid Metabolism
Authors: Wang Baike , Li Ning , Wang Juan , Huang Shaoyong , Tang Yaping , Yang Shengbao , Yang Tao , Wang Qiang , Yu Qinghui , Gao Jie 
Published: February 2020

AbstractSo far, over 50 spontaneous male sterile mutants of tomato have been described and most of them are categorized as genetic male sterility. To date, the mechanism of tomato genetic male sterility remained unclear. In this study, differential proteomic analysis is performed between genetic male sterile line (2‐517), which carries the male sterility (ms1035) gene, and its wild‐type (VF‐11) using isobaric tags for relative and absolute quantification‐based strategy. A total of 8272 proteins are quantified in the 2–517 and VF‐11 lines at the floral bud and florescence stages. These proteins are involved in different cellular and metabolic processes, which express obvious functional tendencies toward the hydroxylation of the ω‐carbon in fatty acids, the tricarboxylic acid cycle, the glycolytic, and pentose phosphate pathways. Based on the results, a protein network explaining the mechanisms of tomato genetic male sterility is proposed, finding the compromising fat acid metabolism may cause the male sterility. These results are confirmed by parallel reaction monitoring, quantitative Real‐time PCR (qRT‐PCR), and physiological assays. Taken together, these results provide new insights into the metabolic pathway of anther abortion induced by ms1035 and offer useful clues to identify the crucial proteins involved in genetic male sterility in tomato.
Fluid Volume Management in Prosthesis Users: Augmenting Panel Release with Pin Release
Authors: McLean Jake B. , Larsen Brian G. , Weathersby Ethan J. , Carter,BS Ryan V. , Allyn Katheryn J. , Garbini Joseph L. , Sanders Joan E. 
Published: February 2020

BackgroundManagement of fluid in the limbs is a challenge faced by people with disabilities. In prosthetics, a means for transtibial prosthesis users to stabilize their residual limb fluid volume during the day may improve socket fit.ObjectiveTo determine if releasing the panels and locking pin of a cabled‐panel adjustable socket during socket release significantly improved limb fluid volume recovery and retention over releasing the panels alone.DesignRepeated‐measures experiment to assess the effects on limb fluid volume retention.SettingParticipants were tested in a laboratory setting while walking on a treadmill.InterventionRelease of a locking pin tether during sitting as a limb volume accommodation strategy.Main Outcome MeasurePercent limb fluid volume retention for panel and pin release compared with panel release alone at 2 minutes (short term) and 50 minutes (long term) after subsequent activity. Limb fluid volume was monitored using bioimpedance analysis.ResultsMedian percent limb fluid volume retention for the panel and pin release was significantly greater than panel release alone for both anterior and posterior regions for the long term (P = .0499 and .0096, respectively) but not the short term (P = .0712 and .1580, respectively).ConclusionAugmenting panel release with pin release may be an effective accommodation strategy for prosthesis users with transtibial amputation to better retain limb fluid volume.
The influence of monomer chemistry on radical formation and secondary reactions during electron‐beam polymerization
Authors: Thiher Nicole L. K. , Schissel Sage M. , Jessop Julie L. P. 
Published: February 2020

AbstractThe vast majority of industrial electron‐beam (EB) polymerizations are initiated via radical mechanism. Because radicals drive EB polymerization, understanding their formation and secondary reactions can provide insight into polymerization kinetics and property development. Primary and initiating radicals were quantified by measuring
G(R•) and
G(M•), respectively, for various acrylate and methacrylate monomers. Monomer chemistry was shown to impact primary radical formation; however, increased primary radical concentration did not necessarily correlate to increased conversion. Despite exhibiting high values of
G(R•), methacrylates achieved very little conversion and had
G(M•) values near zero. Acrylates achieved much higher
G(M•) values and rates of polymerization compared to their methacrylate counterparts. Additionally, the efficiency of primary radicals converting to initiating radicals,
f(M•), for each acrylate monomer was shown to be a good predictor of the amount of gel fraction formed during polymerization. Understanding radical formation and secondary radical reactions can help guide the structure/processing conditions/properties relationships that are currently underdeveloped for EB reactions.
Graphdiyne: A Brilliant Hole Accumulator for Stable and Efficient Planar Perovskite Solar Cells
Authors: Zhang Jianjun , Tian Jiawu , Fan Jiajie , Yu Jiaguo , Ho Wingkei 
Published: February 2020

AbstractTraditional carbon materials have demonstrated immense potential in perovskite solar cells (PSCs) owing to their superior electrical properties and environmental stability. Graphdiyne (GDY), as an emerging carbon allotrope, features uniformly distributed pores, endless design flexibility, and unique electronic character compared with traditional carbon materials. Herein, graphdiyne is introduced into the upper part of the perovskite (CH3NH3PbI3) layer by utilizing a GDY‐containing antisolvent during the one‐step synthesis of perovskite. Intriguingly, GDY plays an essential role in hole accumulation and transportation because of its higher Fermi level than perovskite. As a result, the automatic separation of photogenerated carriers inside the perovskite film is achieved. Furthermore, the Schottky barrier formed on the interface between perovskite and GDY guarantees the unidirectional hole transport from perovskite to GDY, thereby benefiting further extraction to the hole transport layer. Consequently, GDY‐modified perovskite‐based planar PSCs exhibit a boosted Jsc of 24.21 mA cm−2 and up to 19.6% power conversion efficiency owing to the increased efficient light utilization and charge extraction. The device with GDY modification exhibits less than 10% shrinkage after a month in ambience. Overall, this work demonstrates an easy method for the utilization of GDY to boost the charge extraction and environmental stability in PSCs.
Coupled effects of sustained compressive loading and freeze–thaw cycles on water penetration into concrete
Authors: Bao Jiuwen , Xue Shanbin , Zhang Peng , Dai Zhengzheng , Cui Yifei 
Published: February 2020

AbstractThe combined action of sustained loading and freeze–thaw cycles (FTCs) plays an important role in the durability and service life of concrete exposed to the cold coastal area. Water transport is a primary factor closely pertaining to freeze–thaw damage in concrete, and the microcracks induced by sustained loading could provide a flow path to facilitate water penetration into concrete. This paper presents the results of an experimental investigation on water penetration behavior of ordinary and air‐entrained concrete (OC and AC) subjected to sustained compressive loading and FTCs. Aiming at the combined effects of low compressive stress ratio and FTCs on water transport, a series of water absorption and permeability experiments with the stress ratio of 0, 0.3, and 0.5 after various FTCs were conducted. The relative dynamic elastic modulus and mass loss were afterwards measured to characterize the frost damage within concrete. The experimental results indicated that the sustained compressive loading and frost action have significant influences on capillary water absorption and permeability for the OC and AC specimens. Both the initial coefficient of capillary absorption and water permeability coefficient increase with the increase of FTCs, while they initially decrease and later increase with the increase of compressive stress ratio.
Secondary metabolites from the aerial parts of Buddleja macrostachya Benth
Authors: Hien Truong Thi Thu , Quang Tran Hong , Nhiem Nguyen Xuan , Phi Vu Phuong , Van Dong Le , Dung Hoang Viet , Trung Do Minh , Tram Le Huyen , Van Kiem Phan 
Published: February 2020

AbstractPhytochemical investigation of the aerial parts of Buddleja macrostachyaresulted in the isolation of seven compounds, including 6‐α‐L‐(2′′‐caffeoyl)rhamnopyranosylcatalpol (1), 6‐α‐L‐(4′′‐O‐trans‐p‐coumaroyl)rhamnopyranosylcatalpol (2), apigenin (3), acacetin‐7‐O‐α‐L‐rhamnopyranosyl‐(1→6)‐β‐D‐glucopyranoside (4), mimengoside C (5), buddlejasaponin Ia(6), and buddejasaponin I (7). Their chemical structures were identified based on 1D, 2D NMR, and MS spectroscopic analysis and comparison with the reported data in literature. This is the first time to report the isolation of 6‐α‐L‐(2′′‐caffeoyl)rhamnopyranosylcatalpol and 6‐α‐L‐(4′′‐O‐trans‐p‐coumaroyl)rhamnopyranosylcatalpol from the genus Buddleja.
Synthesis and structure of two platinum(II) complexes bearing N‐heterocyclic carbene and dimethyl sulfoxide
Authors: Van Thong Pham , Thom Do Thi , Chi Nguyen Thi Thanh 
Published: February 2020

AbstractThe reactions of cis‐[PtCl2(DMSO)2] (1) with either 1,3‐dibenzylimidazolium chloride (Bn2‐imy·HCl) or 1,3‐dibenzylbenzimidazolium chloride (Bn2‐bimy·HCl) in the presence of a base (Ag2O/ Na2CO3/ CH3COONa) afforded two mixed monocarbene‐dimethyl sulfoxide (DMSO) complexes, namely cis‐[PtCl2(DMSO)(Bn2‐imy)] (2) and cis‐[PtCl2(DMSO)(Bn2‐bimy)] (3), with the high yields. The structures of 1÷3 were elucidated by Pt analysis, EDX, IR and 1H NMR spectra. The results show that the DMSO in 1÷3 coordinates with Pt(II) via the S atom, the deprotonated azolium salt is bound up with Pt(II) via the C atom (NCHN) and occupies cis‐position in comparison with the DMSO in 2 and 3.
Synthesis and characterization of HA/β‐TCP bioceramic powder
Authors: Vuong Bui Xuan 
Published: February 2020

AbstractThe main goal of this study is to elaborate and evaluate the physicochemical properties of the synthetic biphasic calcium phosphate (BCP) powder: a combined mixture of hydroxyapatite (HA): Ca10(PO4)6(OH)2 and beta‐tricalcium phosphate (β‐TCP): Ca3(PO4)2. The BCP mixture has two advantages: high bioactivity (HA) and rapid biodegradation (β‐TCP). The obtained powders of BCP were prepared by precipitate method. XRD analysisconfirmed that the synthetic materials were comprised of both HA and β‐TCP crystalline phases. SEM images showed that the small particles of HA attached on bigger particles of β‐TCP in the structure morphology of BCP. The in‐vitro experiment was carried out in static condition by soaking of a series of 50 mg BCP powders in 100 ml simulated body fluid (SBF) solution at different periods of soaking time. The microstructure and chemical bonds after soaking were studied by XRD and SEM methods. The obtained results confirmed the bioactivity of synthetic BCP material by the formation of a new apatite layer on its surface.
Optimization of the synthesis of amidoamine‐based surfactant
Authors: Hung Bui Duy , Binh Pham Thi Nam , Ha Vu Thi Thu , Thang Duong Quang 
Published: February 2020

AbstractIn this study, lauryl amidoamine was synthesized by reaction of methyl laurate with ethylendiamine. The reaction conditions were optimized using Modde 5.0 software. According to the results, the optimum molar ratio of ethylenediamine to methyl laurate, reaction temperature and reaction time were 2,135°C and 3.8 h, respectively. The actual experimental yield was 96.69 % under the optimum condition, which compared well with the maximum predicted value of 97.22 %. The synthesis of coconut amidoamine from coconut methyl esters had yield 95.73 % under the same conditions. Size of water in diesel oil 0.05S emulsion using coconut amidoamine as an emulsifier of 147 nm was obtained.
Chemical constituents of Boehmeria holosericea Blume (Urticaceae)
Authors: Ai Doan Thi Thuy , Van Trinh Thi Thanh , Huong Doan Thi Mai , Litaudon Marc , Tram Le Huyen , Van Cuong Pham 
Published: February 2020

AbstractFrom fruits of Boehmeriaholosericea, six compounds 1‐6 were isolated by various chromatographic methods. Their structures were elucidated by extensive spectroscopic analysis, including ESI‐MS,1D NMR, 2D NMR spectra, they are identified as ruspolinone (1), benzyl β‐D‐glucoside (2), 3,4‐dimethoxyacetophenone (3), adenine (4), adenosine (5) and uridine (6). All the compounds were obtained for the first time from Boehmeria genus.
Study of the adsorption of 2,4‐dichlorophenoxyacetic acid from the aqueous solution onto carbon nanotubes
Authors: Hue Hoang Kim , Anh Lam Vinh , Thiep To Van 
Published: February 2020

AbstractThe adsorption of 2,4‐dichlorophenoxyacetic acid (2,4‐D) from the aqueous solution on carbon nanotubes (CNTs‐TC) was investigated in the concentration range from 52.248 to 205.672 mg L‐1. The results indicated that carbon nanotubes exhibited the highest 2,4‐D uptake capacity of 84.034 mg g‐1 at 283 K. Freundlich isotherm model showed a better fit with obtained adsorption data than Langmuir and Temkin isothermal models. The adsorption performance of 2,4‐D onto CNTs‐TC fitted the pseudo‐second‐order model and apparent equilibrium was reached within 50 minutes. The overall rate process appeared to be influenced by both external mass transfer and intra‐particle diffusion, but mainly governed by intra‐particle diffusion. The activation energy of adsorption was determined to be 6.4514 kcal.mol‐1. The calculated thermodynamic parameters showed adsorption of 2,4‐D onto CNTs‐TC was exothermic and spontaneous.
Secondary metabolites from the marine‐derived fungus Paraconiothyrium sp. VK‐13
Authors: Quang Tran Hong , Nhiem Nguyen Xuan , Tai Bui Huu , Yen Pham Hai , Dung Duong Thi , Ngan Nguyen Thi Thanh , Le Tuan Anh Hoang , Van Minh Chau , Van Kiem Phan 
Published: February 2020

AbstractChemical investigation of a fermentation culture of the marine endophytic fungus Paraconiothyrium sp. VK‐13 resulted in the isolation of five compounds, including a new phenolic compound, 1‐(2,5‐dihydroxyphenyl)‐1‐oxobutan‐3‐yl acetate (1) and four known metabolites, 1‐(2,5‐dihydroxyphenyl)‐2‐buten‐1‐one (2), 3,7‐dimethyl‐1,8‐dihydroxy‐6‐methoxyisochroman (3), modiolides A (4) and B (5). Their chemical structures were identified based on 1D, 2D NMR, and MS spectroscopic analysis and comparison with the data reported previously in the literature. All the isolated compounds were reported for the first time from the genus Paraconiothyrium.
Effects of the ease of separation index (ESI) and feed composition on the selection of distillation configuration
Authors: Dung Nguyen Trung , Thai Vu Hong 
Published: February 2020

AbstractDistillation process consumes the energy in chemical industry. To reduce the consumption, divided wall column (DWC) has been known to be suitable for multicomponent separation and be able to save both energy and capital cost compared to conventional distillation column. However, due to more operation parameters than traditional distillation, design method, control and operation of the DWC are more complicated. In this paper, firstly, a conceptual design of a DWC system is proposed. The method based on shortcut methods of Fenske, Underwood, Gilliland and Kirbride, which can rapidly determine structural and operational parameters of the DWC. Secondly, to compare the energy of use between DWC and conventional column, three ternary mixtures are studied with different values of the ease of separation index (ESI) and feed compositions. The results show that the energy consumption of the DWC system is more efficient than the traditional distillation column but it is not always the best arrangement in the multicomponent separation process. The selecting depended on both ESI value and feed composition of a mixture. Based on the comparison, a distillation boundary of ternary diagram is drawn to make a proper choice for the best configuration.
Introduction of Co3O4 to MnO2/activated carbon for high performance electrode materials toward electrochemical capacitor application
Authors: Van Khu Le , Thuy Luong Thi Thu , Chi Ngo Kim 
Published: February 2020

AbstractCobalt oxide has been chosen for incorporating with MnO2/activated carbon (AC) material. The samples were characterized by means of X‐ray diffraction (XRD), transmission electron microscopy (TEM), and isothermal adsorption – desorption of N2 at 77.35 K (BET). The results showed that the CoMn/AC samples are amorphous and covered by homogeneous, dispersed oxide particles. The BET surface area and pore volume are up to 2826 m2/g and 1.7441 cm3/g, respectively. The electrochemical characterization was performed using cyclic voltammetry and galvanostatic charge/discharge test in 6.0 M KOH electrolyte. CoMn/AC electrode incorporated with 1.5 % Co3O4 exhibited higher specific capacitance than other percentages, reached 358 F/g at a scan rate of 5 mV/s and 1159 F/g at specific current density of 0.5 A/g. The enhanced capacitance is attributed to the combination of two charge storage mechanism: electrical double layer capacitor and pseudo‐capacitor.
Studying on the adsorption of chromium(VI) on polyaniline modified with activated tea residue
Authors: Ha Tran Thi , Quan Vo An , Hop Nguyen Quang , Thuy Tran Minh , Ngoc Nguyen Thi , Que Le Xuan 
Published: February 2020

AbstractIn this study, the Cr(VI) adsorption on modified polyaniline materials (MPM) was investigated. The MPM was produced by polymerization of aniline in 1 M H2SO4solution with the presence of activated tea residue. The tea residue samples have been activated by 0.5 KOH or H3PO4 (85 %) solution. The absorption of the Cr(VI) ions on the MPM was studied in this paperby means of infrared (IR) spectroscopy, scanning electron microscopy (SEM) and atomic adsorption spectrometer (AAS) in order to get a preliminary assessment of Cr(VI) adsorption efficiency. The experiment results shown that the applied MPM has good Cr(VI) adsorption capacity, the appropriate pH range for the adsorption process is 5.5÷7.5. The MPM after synthesis process is stable and easy to store and to apply for treatment of heavy metals in waste water.
Cyclopeptides from marine actinomycete Streptomyces sp. G261
Authors: Danh Cao Duc , Dao Phi Thi , Huong Doan Thi Mai , Thach Tran Dang , Anh Nguyen Mai , Minh Le Thi Hong , Anh Tran Tuan , Van Cuong Pham 
Published: February 2020

AbstractAccording to the results from our screening program, the EtOAc extract of a Streptomyces sp. (strain G261) collected in Cu Lao Cham – Quang Nam showed antimicrobial activity against Enterococcus faecalis, Bacillus cereus, Pseudomonas aeruginosa and Candida albicans. Seven secondary metabolites Cyclo‐(Leu‐Pro) (1), Cyclo‐(Pro‐Gly) (2), Cyclo‐(Pro‐Ala) (3), Cyclo‐(Leu‐Tyr) (4), Cyclo‐(Pro‐Tyr) (5), and Cyclo‐trans‐4‐OH‐(Pro‐Phe) (6) were isolated from the cultures broth of Streptomyces (strain G261). Their structures were determined by MS and 2D NMR spectroscopic analysis, as well as by comparison with reported data in literature.
Release of chondroitin sulfate form the chicken keel cartilage by protamex hydrolysis
Authors: Le Vien Nguyen Thi , Van Thien Phu Luu , Phuong Nguyen Thi Thanh , Hanh Tran Thi Hong , Dao Dong Thi Anh 
Published: February 2020

AbstractGlycosaminoglycan (GAGs) is one kind of mucopolysaccharide, the natural biocompound can be extracted from cartilage of sharks, pigs, cows, chickens, etc. It contains chondroitin‐4‐sulphate, chondroitin‐6‐sulphate, heparansulphate, dermatansulphate, keratan sulphate, and hyaluronic acid, links with protein chains and thus are called proteoglycan. Chondroitin‐4‐sulfate (CS), the highest proportion in GAGs of poultry cartilage, is using as a supplement of functional food for preventing and supporting treatment of arthritis and eye tissues. Therefore, it is necessary to release the CS from chicken cartilage that is abundant by‐products of poultry processing. In this study, the hydrolysis conditions by protamex of chicken cartilage were investigated. The variables such as: pH, protamex content, incubation temperature, and hydrolysis time were optimized. The results of the analysis of variance (ANOVA) shown that the variables actively affected CS content. The optimal conditions of hydrolysis were pH of 5.81, ratio of enzyme per substances of 0.85 % w/wprotein, temperature of 54.63°C and hydrolysis time of 204 minutes, GAGs content reached 25.28 %. Analysis by HPLC revealed CS content 17.69 % dry matter of raw material
Preliminary study on the chemical constituents of the leaves of Macaranga balansae Gagnep.
Authors: Thang Pham Toan , Dung Nguyen Anh , Giap Tran Huu , Oanh Vu Thi Kim , Hang Nguyen Thi Minh , Huong Tran Thu , Thanh Le Nguyen , Huong Doan Thi Mai , Van Cuong Pham 
Published: February 2020

AbstractMacaranga balansae Gagnep., locally known as “Ba soi lông tơ” or “Mã rạng balansa”, is a tree endemic to Vietnam, found at central provinces. Its ethyl acetate extract was showed cytotoxic activity against TG1 cancer cell line. In this paper, we report the preliminary study on the chemical constituents of the leaves of M. balansae. Seven known compounds including lupeol (1), phytol (2), isophytol (3), sitostenone (4), sitoindoside I (5), gallic acid (6) and methyl gallate (7) were isolated from the ethyl acetate extract of the leaves of M. balansae. Their chemical structures were identified by NMR, MS spectra and in comparison with the reported literatures.
Effects of reaction parameters on photodegradation of caffeine over hierarchical flower‐like ZnO nanostructure
Authors: Mai Le Thi , Hoai Luu Thi , Tuan Vu Anh 
Published: February 2020

AbstractIn this paper, the flower‐like ZnO nanostructure was prepared by hydrothermal method. As‐synthesized sample was characterized by XRD, SEM, and N2 adsorption/desorption isotherm. The photocatalytic performance of ZnO was evaluated by degradation of caffeine under UV irradiation. The effects of various reaction parameters such as catalyst dosage, pH of solution, and caffeine concentration on degradation of caffeine were investigated. The results showed that 3 g/L of ZnO could completely degrade 5 mg/L of caffeine under neutral or desired alkaline medium within 120 min. In addition, the impacts of inorganic ions (cation and anion) on degradation process were also studied. Flower‐like ZnO also exhibited the good degradation efficiency of some popular organic dyes in wastewater such as methyl orange, congo red, tartrazine, nile blue and janus green B. The reaction kinetic of photodegradation of caffeine was studied by first kinetic model.
Synthesis and biological activities of organoaluminum steroids
Authors: Dzhemilev Usein M. , D'Yakonov Vladimir A. , Tuktarova Regina A. , Gloriozova Tatyana A. , Dzhemileva Lilya U. , Terent'Ev Alexander O. , Dembitsky Valery M. 
Published: February 2020

AbstractThis review presents the synthesis of organoaluminum steroids (OAS) using catalytic cycloalumination of vinylcholestane and/or allylcholestane derivatives with Et3Al catalyzed by Cp2ZrCl2 which gives aluminacyclopentanes in a yield of about 90 %. Biological activity of synthesized organoaluminum steroids was determined with an aid of PASS program. Organoaluminum steroids showed antiprotozoal, antihypercholesterolemic, and antieczematic activity with a certainty from 78 to 92 %.
Flavonoids and other compounds from Vitex limonifolia
Authors: Thoa Nguyen Thi Kim , Ban Ninh Khac , Trang Do Thi , Linh Tran My , Giang Vu Huong , Nhiem Nguyen Xuan , Van Kiem Phan 
Published: February 2020

AbstractUsing combined chromatographic methods, three flavonoids, 5,4′‐dihydroxy‐3,7‐dimethoxyflavone (1), vitecetin (2), 5,4′‐dihydroxy‐7,3′‐dimethoxyflavone (3), a lignan, verrucosin (4), and a γ‐pyrone glycoside, maltol O‐β‐D‐glucopyranoside (5) were isolated from the methanol extract of the leaves of Vitex limonifolia. Their structures were identified on the basis of spectroscopic evidence and comparison with those reported in the literature. Compounds 1 and 3‐5 were reported from Vitex genus for the first time.