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Yuman Zhou,Hongbo Wang,Jianxin He,Kun Qi,Bin Ding,Shizhong Cui 한국섬유공학회 2018 Fibers and polymers Vol.19 No.10
Electrospinning is a simple and cost-effective method to prepare fiber with nanometer scale. More importantly, 3D flexible nanofiber yarns that fabricated by electrospinning have shown excellent application prospects in smart textiles, wearable sensors, energy storage devices, tissue engineering, and so on. However, current methods for preparing electrospinning nanofiber yarns had some limitations, including low yarn yield and poor yarn structure. In this paper, a stepped airflow-assisted electrospinning method was designed to prepare continuously twisted nanofiber yarn through introducing stepped airflow into traditional electrospinning system. The stepped airflow could not only help to improve nanofiber yield, but also good for controlling the formed nanofibers to be deposited in a small area. In addition, the experimental methods of single factor variables were used to study the effects of stepped airflow pressure, applied voltage, spinning distance, solution flow rate, air pumping volume and friction roller speed on nanofiber yarn yield, nanofiber diameter, yarn twist and mechanical property. The results showed that prepared nanofiber yarns exhibited perfect morphologies and the yield of nanofiber yarn could reach to a maximum of 4.207 g/h. The breaking strength and elongation at break of the prepared yarn could reach to 23.52 MPa and 30.61 %, respectively.
( Yuman Kawoos ),( Zaid A Wani ),( Showkat A Kadla ),( Irfan A Shah ),( Arshad Hussain ),( M Maqbool Dar ),( Mushtaq A Margoob ),( Kouser Sideeq ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.4
Background/Aims Irritable bowel syndrome (IBS) is a chronic psycho-physiological disorder. It is considered to be the most common functional gastrointestinal disorder, and about 50-90% of IBS patients have associated psychiatric co-morbidity. We aimed to study psychiatric co-morbidities in patients with IBS visiting a tertiary care center. Methods This was a cross-sectional case-control study conducted over a duration of one and a half years from January 2014 to July 2015. Patients were selected from the out-patient department of gastroenterology. About 160 patients with IBS who fulfilled the inclusion criteria and who gave written informed consent were selected as study cases. The healthy attendants of cases were selected as controls. A total of 200 controls were selected. Rome-III criteria were used to diagnose IBS. For diagnosing psychiatric disorders, we used the Mini International Neuropsychiatric Interview Schedule Plus. Results Mean age of our cases and controls was 39.7 ± 11.4 and 37.7 ± 9.6 years, respectively. Females outnumbered males in our cases as well as their controls by a ratio of 2:1 approximately. Psychiatric disorders were seen in 84.4% of IBS patients as compared to 41.5% in controls. Major psychiatric disorders seen in our patients were generalized anxiety disorders (30.0%) and depression (28.0%). Conclusions The majority of patients with IBS who present to a tertiary care center have co-morbid psychiatric disorders. We need to screen these patients for such co-morbidities and develop a holistic approach for better outcome in such cases. (J Neurogastroenterol Motil 2017;23:555-560)
Shuxia Li,Yunru An,Shaya Hailati,Jing Zhang,Yuman Cao,Yushi Liu,Jincai Geng,Tianming Hu,Peizhi Yang 한국식물학회 2019 Journal of Plant Biology Vol.62 No.5
Cytokinin oxidase/dehydrogenase (CKXs) areinvolved in various physiological processes, includingcytokinins (CKs) catabolism, root system architecture andresponse to abiotic stresses in plants. Alfalfa (Medicagosativa) is a widely cultivated forage which is frequentlythreatened by high salinity, and the potential role of CKXs inalleviating the salt stress in alfalfa lacked attention. In thisstudy, we isolated a CKX gene from alfalfa, MsCKX(MK177192), and identified its biological functions byoverexpressing it in Arabidopsis. MsCKX shares high sequenceidentity with CKX from other legume plants, especiallyMedicago truncatula (98%). MsCKX was clearly tissuespecific,and it was mainly expressed in roots. In addition,the expression of MsCKX increased under salt stress andabscisic acid (ABA) treatment. Overexpression of MsCKXgene increased the activity of CKX, which led to an enlargedroot system in transgenic Arabidopsis plants. Overexpressionof MsCKX gene enhanced salt tolerance of transgenic plantsby maintaining a higher K+/Na+ ratio, enhancing the activities ofantioxidant enzymes to scavenge ROS and increasing theexpression levels of stress-related genes (P5CS1, DREB2,ion transporters and H+ pumps). Taken together, these resultsshed light on the roles of MsCKX involved in salt toleranceand may have applications in salt-resistant breeding ofalfalfa.
Redox-active 2D porous organic polymers for high-performance supercapacitor
Daping Hu,Yuhang Jia,Shaopei Yang,Fuyao Huang,Yuman Dong,Pengcheng Du 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
Porous organic polymers (POPs) have been received considerable attention due to their advantages oflarge surface areas, good stability and functionalities, which are considered an ideal electrode materialfor the energy storage device that has been developed and applied in lithium batteries, zinc ion batteriesand supercapacitors. Here we describe the synthesis of four kinds of redox-active 2D POPs via solvothermalSchiff base condensation using aniline oligomers with different chain lengths as building units thatexhibit reversible electrochemical processes. Among them, the Tp-AT-POP based on 1,3,5-triformylphloroglucinol (Tp) and aniline trimer (AT) deliver high electrochemical performance mainlycontributed by redox units exhibiting high specific capacitance up to 348.3 F/g at a current density of0.5 A/g and possessing excellent cycling stability of 71% after 5000 cycles. In addition, the Tp-AT-POPis developed to assemble a symmetric supercapacitor with specific capacitances of 167 F/g at 0.3 A/gand good cycling stability. This work provides an efficient strategy for developing the redox-active 2DPOPs with aniline oligomer structure for the next-generation advanced high-performance energy storagedevice.
Fuyao Huang,Yuhang Jia,Shaopei Yang,Yuhong Long,Yuman Dong,Pengcheng Du 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-
Transition metal phosphides (TMPs) have been widely recognized as an ideal choice for supercapacitors(SCs) due to exceptional pseudocapacitance performance. Otherwise, reasonable structural design ofTMPs can overcome the defects of low rate performance and poor cycle life. Furthermore, the incorporationof carbon materials can enhance electronic conductivity, thereby enabling rapid electron transmission. Herein, we present a novel hierarchical carbon layer coated NiCoP nanoparticles embedded onnitrogen-doped carbon nanotubes (NiCoP/NCNTs), synthesized through a calcination/phosphorizationprocess. By incorporating a carbon layer to anchor nanoscale NiCoP, an increased number of active sitesand improved structural stability are achieved. Furthermore, the presence of NCNTs enhances the electronicconductivity. These combined features result in impressive performance, with NiCoP/NCNTsexhibiting an impressive specific capacitance of 1628.4 F/g at 1 A/g, and good rate capability of 78.5 %up to 50 A/g. Moreover, it also exhibits outstanding cycling stability, maintaining a capacitance retentionof 71.4% after 10 000 cycles. Moreover, the asymmetric SCs based on NiCoP/NCNTs and AC deliver a highenergy density of 45.46 Wh/kg, and exhibit excellent cycling stability of 92.5% after 5000 cycles. Theseresults highlight the potential of NiCoP/NCNTs as a novel battery-type electrode material for energystoragedevices.
Desiderio, Jacopo,Stewart, Camille L.,Sun, Virginia,Melstrom, Laleh,Warner, Susanne,Lee, Byrne,Schoellhammer, Hans F.,Trisal, Vijay,Paz, Benjamin,Fong, Yuman,Woo, Yanghee The Korean Gastric Cancer Association 2018 Journal of gastric cancer Vol.18 No.3
Purpose: Enhanced recovery after surgery (ERAS) protocols for gastric cancer patients have shown improved outcomes in Asia. However, data on gastric cancer ERAS (GCERAS) programs in the United States are sparse. The purpose of this study was to compare perioperative outcomes before and after implementation of an GC-ERAS protocol at a National Comprehensive Cancer Center in the United States. Materials and Methods: We reviewed medical records of patients surgically treated for gastric cancer with curative intent from January 2012 to October 2016 and compared the GC-ERAS group (November 1, 2015-October 1, 2016) with the historical control (HC) group (January 1, 2012-October 31, 2015). Propensity score matching was used to adjust for age, sex, number of comorbidities, body mass index, stage of disease, and distal versus total gastrectomy. Results: Of a total of 95 identified patients, matching analysis resulted in 20 and 40 patients in the GC-ERAS and HC groups, respectively. Lower rates of nasogastric tube (35% vs. 100%, P<0.001) and intraabdominal drain placement (25% vs. 85%, P<0.001), faster advancement of diet (P<0.001), and shorter length of hospital stay (5.5 vs. 7.8 days, P=0.01) were observed in the GC-ERAS group than in the HC group. The GC-ERAS group showed a trend toward increased use of minimally invasive surgery (P=0.06). There were similar complication and 30-day readmission rates between the two groups (P=0.57 and P=0.66, respectively). Conclusions: The implementation of a GC-ERAS protocol significantly improved perioperative outcomes in a western cancer center. This finding warrants further prospective investigation.
Jacopo Desiderio,Camille L. Stewart,Virginia Sun,Laleh Melstrom,Susanne Warner,Byrne Lee,Hans F. Schoellhammer,Vijay Trisal,Benjamin Paz,Yuman Fong,우양희 대한위암학회 2018 Journal of gastric cancer Vol.18 No.3
Purpose: Enhanced recovery after surgery (ERAS) protocols for gastric cancer patients have shown improved outcomes in Asia. However, data on gastric cancer ERAS (GC-ERAS) programs in the United States are sparse. The purpose of this study was to compare perioperative outcomes before and after implementation of an GC-ERAS protocol at a National Comprehensive Cancer Center in the United States. Materials and Methods: We reviewed medical records of patients surgically treated for gastric cancer with curative intent from January 2012 to October 2016 and compared the GC-ERAS group (November 1, 2015–October 1, 2016) with the historical control (HC) group (January 1, 2012–October 31, 2015). Propensity score matching was used to adjust for age, sex, number of comorbidities, body mass index, stage of disease, and distal versus total gastrectomy. Results: Of a total of 95 identified patients, matching analysis resulted in 20 and 40 patients in the GC-ERAS and HC groups, respectively. Lower rates of nasogastric tube (35% vs. 100%, P<0.001) and intraabdominal drain placement (25% vs. 85%, P<0.001), faster advancement of diet (P<0.001), and shorter length of hospital stay (5.5 vs. 7.8 days, P=0.01) were observed in the GC-ERAS group than in the HC group. The GC-ERAS group showed a trend toward increased use of minimally invasive surgery (P=0.06). There were similar complication and 30-day readmission rates between the two groups (P=0.57 and P=0.66, respectively). Conclusions: The implementation of a GC-ERAS protocol significantly improved perioperative outcomes in a western cancer center. This finding warrants further prospective investigation.