ON Shanghai’s acrobatic stage, the audience held its breath while it watched a lion put its front paws on the shoulders of a dainty and beautiful young woman and licked her face with its red tongue. The girl was perf...ON Shanghai’s acrobatic stage, the audience held its breath while it watched a lion put its front paws on the shoulders of a dainty and beautiful young woman and licked her face with its red tongue. The girl was perfectly calm, even smiling. This legendary woman is Zhang Xiuhong, a lion-tamer in the Shanghai Acrobatic Troupe. I Fear the Lion When she was 11, Zhang Xiuhong joined the Shanghai Acrobatic Troupe Soon afterward, she was assigned to work as a lion-tamer. The first animal she tamed was a lion cub. From展开更多
Colonic anastomotic leakage(AL)remains the most severe complication of colorectal surgery,significantly increasing morbidity,mortality,and healthcare burdens.The ideal solution-complete AL prevention without a defunct...Colonic anastomotic leakage(AL)remains the most severe complication of colorectal surgery,significantly increasing morbidity,mortality,and healthcare burdens.The ideal solution-complete AL prevention without a defunctioning stoma-has long eluded surgeons and patients.Hu et al proposed total enteric flow diversion using a modified ileostomy tube with an inflatable balloon,demonstrating its efficacy in completely preventing AL in porcine models.This innovation echoes the ancient legend of Yu the Great,a Chinese hero renowned for taming the Yellow River’s catastrophic floods.Unlike his father,who failed by merely building embankments to block water,Yu succeeded by dredging channels to redirect floods seaward.This paradigm of“diversion over obstruction”applies equally to AL prevention.Beyond Hu et al’s balloon technique,alternatives like the C-seal,the SafeHeal Colovac+anastomosis protection device and Tong et al’s biodegradable stent-based diverting techniques show promise in clinical trials.Key challenges remain:Diversion efficiency,device migration risks,and patient tolerance.We must accelerate such like breakthroughs in non-stoma diversion strategies to transform AL management.展开更多
In the sweltering heat of summer,a visitor to Nugusitai Town of Tongliao City,Inner Mongolia Autonomous Region,might find it hard to recognise the landscape.Once a desolate expanse of drifting sand,the hillsides are n...In the sweltering heat of summer,a visitor to Nugusitai Town of Tongliao City,Inner Mongolia Autonomous Region,might find it hard to recognise the landscape.Once a desolate expanse of drifting sand,the hillsides are now cloaked in lush forest.Tall wind turbines rotate quietly,and wetlands glimmer between groves of forest,providing a haven for waterfowl.展开更多
In this paper,we will discuss the almost global existence result for d-dimensional fractional nonlinear Schrodinger equation on flat torus,which is based on BNF technique,the tame property and the analysis of the spec...In this paper,we will discuss the almost global existence result for d-dimensional fractional nonlinear Schrodinger equation on flat torus,which is based on BNF technique,the tame property and the analysis of the spectrum of(-Δ)^(s).展开更多
This paper aims to investigate the tamed Euler method for the random periodic solution of semilinear SDEs with one-sided Lipschitz coefficient.We introduce a novel approach to analyze mean-square error bounds of the n...This paper aims to investigate the tamed Euler method for the random periodic solution of semilinear SDEs with one-sided Lipschitz coefficient.We introduce a novel approach to analyze mean-square error bounds of the novel schemes,without relying on a priori high-order moment bound of the numerical approximation.The expected order-one mean square convergence is attained for the proposed scheme.Moreover,a numerical example is presented to verify our theoretical analysis.展开更多
油页岩热解过程中产生大量的高质量浓度含酚废水无法排放,文中采用溶剂萃取法,以甲基叔戊基醚(TAME)为溶剂,针对页岩油含酚废水的处理进行初步研究。通过实验和Aspen P lus软件模拟相结合来考察TAME的萃取脱酚性能,研究了不同温度和相...油页岩热解过程中产生大量的高质量浓度含酚废水无法排放,文中采用溶剂萃取法,以甲基叔戊基醚(TAME)为溶剂,针对页岩油含酚废水的处理进行初步研究。通过实验和Aspen P lus软件模拟相结合来考察TAME的萃取脱酚性能,研究了不同温度和相比条件下错、逆流萃取流程的分离性能。结果表明:TAME的脱酚能力很强,对苯酚的分配系数在40—60之间,pH值在2—10时萃取率达95%以上。此外比较了错、逆流3级萃取工艺,综合考虑萃取效果和溶剂用量,逆流多级萃取远远优于错流多级萃取,塔内3级萃取相比为2时出口废水酚质量浓度可降到1 mg/L以下,且受温度影响不明显。可见TAME的脱酚性能优异,在酸碱性体系中均适用,同时TAME原料易得,成本较低,可以作为含酚废水萃取工艺的萃取剂。展开更多
文摘ON Shanghai’s acrobatic stage, the audience held its breath while it watched a lion put its front paws on the shoulders of a dainty and beautiful young woman and licked her face with its red tongue. The girl was perfectly calm, even smiling. This legendary woman is Zhang Xiuhong, a lion-tamer in the Shanghai Acrobatic Troupe. I Fear the Lion When she was 11, Zhang Xiuhong joined the Shanghai Acrobatic Troupe Soon afterward, she was assigned to work as a lion-tamer. The first animal she tamed was a lion cub. From
文摘Colonic anastomotic leakage(AL)remains the most severe complication of colorectal surgery,significantly increasing morbidity,mortality,and healthcare burdens.The ideal solution-complete AL prevention without a defunctioning stoma-has long eluded surgeons and patients.Hu et al proposed total enteric flow diversion using a modified ileostomy tube with an inflatable balloon,demonstrating its efficacy in completely preventing AL in porcine models.This innovation echoes the ancient legend of Yu the Great,a Chinese hero renowned for taming the Yellow River’s catastrophic floods.Unlike his father,who failed by merely building embankments to block water,Yu succeeded by dredging channels to redirect floods seaward.This paradigm of“diversion over obstruction”applies equally to AL prevention.Beyond Hu et al’s balloon technique,alternatives like the C-seal,the SafeHeal Colovac+anastomosis protection device and Tong et al’s biodegradable stent-based diverting techniques show promise in clinical trials.Key challenges remain:Diversion efficiency,device migration risks,and patient tolerance.We must accelerate such like breakthroughs in non-stoma diversion strategies to transform AL management.
文摘In the sweltering heat of summer,a visitor to Nugusitai Town of Tongliao City,Inner Mongolia Autonomous Region,might find it hard to recognise the landscape.Once a desolate expanse of drifting sand,the hillsides are now cloaked in lush forest.Tall wind turbines rotate quietly,and wetlands glimmer between groves of forest,providing a haven for waterfowl.
基金Supported by the National Natural Science Foundation of China(12101542,12371189,12371241).
文摘In this paper,we will discuss the almost global existence result for d-dimensional fractional nonlinear Schrodinger equation on flat torus,which is based on BNF technique,the tame property and the analysis of the spectrum of(-Δ)^(s).
基金supported by the National Natural Science Foundation of China(Nos.12471394,12371417)Natural Science Foundation of Changsha(No.kq2502101)。
文摘This paper aims to investigate the tamed Euler method for the random periodic solution of semilinear SDEs with one-sided Lipschitz coefficient.We introduce a novel approach to analyze mean-square error bounds of the novel schemes,without relying on a priori high-order moment bound of the numerical approximation.The expected order-one mean square convergence is attained for the proposed scheme.Moreover,a numerical example is presented to verify our theoretical analysis.
文摘油页岩热解过程中产生大量的高质量浓度含酚废水无法排放,文中采用溶剂萃取法,以甲基叔戊基醚(TAME)为溶剂,针对页岩油含酚废水的处理进行初步研究。通过实验和Aspen P lus软件模拟相结合来考察TAME的萃取脱酚性能,研究了不同温度和相比条件下错、逆流萃取流程的分离性能。结果表明:TAME的脱酚能力很强,对苯酚的分配系数在40—60之间,pH值在2—10时萃取率达95%以上。此外比较了错、逆流3级萃取工艺,综合考虑萃取效果和溶剂用量,逆流多级萃取远远优于错流多级萃取,塔内3级萃取相比为2时出口废水酚质量浓度可降到1 mg/L以下,且受温度影响不明显。可见TAME的脱酚性能优异,在酸碱性体系中均适用,同时TAME原料易得,成本较低,可以作为含酚废水萃取工艺的萃取剂。
