期刊文献+
共找到281,159篇文章
< 1 2 250 >
每页显示 20 50 100
Functional generalized estimating equation model to detect glaucomatous visual field progression
1
作者 Sanghun Jeong Hwayeong Kim +4 位作者 Sangwoo Moon EunAh Kim Hojin Yang Jiwoong Lee Kouros Nouri-Mahdavi 《International Journal of Ophthalmology(English edition)》 2026年第2期302-311,共10页
AIM:To build a functional generalized estimating equation(GEE)model to detect glaucomatous visual field progression and compare the performance of the proposed method with that of commonly employed algorithms.METHODS:... AIM:To build a functional generalized estimating equation(GEE)model to detect glaucomatous visual field progression and compare the performance of the proposed method with that of commonly employed algorithms.METHODS:Totally 716 eyes of 716 patients with primary open angle glaucoma(POAG)with at least 5 reliable 24-2 test results and 2y of follow-up were selected.The functional GEE model was used to detect perimetric progression in the training dataset(501 eyes).In the testing dataset(215 eyes),progression was evaluated the functional GEE model,mean deviation(MD)and visual field index(VFI)rates of change,Advanced Glaucoma Intervention Study(AGIS)and Collaborative Initial Glaucoma Treatment Study(CIGTS)scores,and pointwise linear regression(PLR).RESULTS:The proposed method showed the highest proportion of eyes detected as progression(54.4%),followed by the VFI rate(34.4%),PLR(23.3%),and MD rate(21.4%).The CIGTS and AGIS scores had a lower proportion of eyes detected as progression(7.9%and 5.1%,respectively).The time to detection of progression was significantly shorter for the proposed method than that of other algorithms(adjusted P≤0.019).The VFI rate displayed moderate pairwise agreement with the proposed method(k=0.47).CONCLUSION:The functional GEE model shows the highest proportion of eyes detected as perimetric progression and the shortest time to detect perimetric progression in patients with POAG. 展开更多
关键词 functional generalized estimating equation model primary open angle glaucoma perimetric progression
原文传递
枫泾猪及其二元杂交F1代的营养价值评价
2
作者 张佳杰 王洪洋 +7 位作者 刁玉段 吴昊旻 雷胜辉 薛云 孙杰 宋欣 谈永松 张莺莺 《食品工业科技》 北大核心 2026年第3期331-341,共11页
为探究枫泾猪(FJ)及其二元杂交F1代的营养价值,以FJ、杜(美)枫猪(DAF)、杜(挪)枫猪(DNF)、皮枫猪(PF)及杜长大猪(DLY)为研究对象,分析其氨基酸和脂肪酸的营养价值指标,并结合主成分分析综合评价其营养价值。结果表明,FJ及其杂交组合的总... 为探究枫泾猪(FJ)及其二元杂交F1代的营养价值,以FJ、杜(美)枫猪(DAF)、杜(挪)枫猪(DNF)、皮枫猪(PF)及杜长大猪(DLY)为研究对象,分析其氨基酸和脂肪酸的营养价值指标,并结合主成分分析综合评价其营养价值。结果表明,FJ及其杂交组合的总n-3多不饱和脂肪酸(Σ_(n-3)PUFA)含量显著高于DLY,且其必需氨基酸指数(EAAI)较高(86.32~90.66)。FJ的肌内脂肪含量(4.77%)、总多不饱和脂肪酸(ΣPUFA)含量(17.05%)和健康脂肪指数(1.83)均为最高,且具有较高的特征氨基酸含量。在不同杂交组合中,DNF的特征氨基酸含量最高;DAF的动脉粥样硬化指数(0.54)和血栓形成指数(1.31)最低;PF的EAAI(90.66)、营养指数(20.63)和生物价(87.12)最高,但其特征氨基酸含量最低。五组猪肉样本的第一限制氨基酸均为缬氨酸。营养价值综合评分为PF>DNF>FJ>DAF>DLY。综上所述,FJ及其杂交组合是摄取PUFA的优质食材,脂肪酸和蛋白质营养价值较高;PF为综合评价营养价值最高的杂交组合。 展开更多
关键词 枫泾猪 杂交f1代 脂肪酸 氨基酸 营养评价
在线阅读 下载PDF
SiC_(f)/SiC复合材料纳秒激光烧蚀机理研究
3
作者 邸腾达 杨煜珩 +2 位作者 赵卿钰 吴东江 马广义 《表面技术》 北大核心 2026年第2期124-133,共10页
目的建立工艺参数与纳秒激光烧蚀SiC_(f)/SiC复合材料烧蚀槽尺寸及烧蚀槽形貌的映射关系,揭示不同工艺参数条件下的烧蚀机理,明确烧蚀过程的成分变化规律,为SiC_(f)/SiC复合材料的孔加工和槽加工提供理论指导和工艺基础。方法通过不同... 目的建立工艺参数与纳秒激光烧蚀SiC_(f)/SiC复合材料烧蚀槽尺寸及烧蚀槽形貌的映射关系,揭示不同工艺参数条件下的烧蚀机理,明确烧蚀过程的成分变化规律,为SiC_(f)/SiC复合材料的孔加工和槽加工提供理论指导和工艺基础。方法通过不同激光能量密度和扫描速度的纳秒激光对SiC_(f)/SiC复合材料进行烧蚀,采用扫描电子显微镜、激光共聚焦显微镜以及显微拉曼光谱仪对烧蚀槽形貌尺寸及物相组成进行分析,揭示纳秒激光烧蚀SiC_(f)/SiC复合材料的烧蚀机理。结果在选定工艺参数范围内,激光能量密度主要影响烧蚀宽度,扫描速度主要影响烧蚀深度,激光能量密度由1.78 J/cm^(2)提高到8.89 J/cm^(2),烧蚀宽度提高了10.06μm。扫描速度由800 mm/s降低到50 mm/s,烧蚀深度提高了76.12μm。结论纳秒激光烧蚀SiC_(f)/SiC复合材料的主要烧蚀产物是SiO_(2)。烧蚀槽内部由于氧分压较小,温度较高,SiC被动氧化会转变为活性氧化,生成SiO和CO等物质。此外,烧蚀过程中SiC会发生分解和蒸发,对材料中SiC的含量和结晶度造成影响。当材料吸收的单位时间激光能量输入较低时,SiC蒸发分解产生的气体反冲压力将熔融液滴抛离,在光斑附近形成半圆形溅射状。当材料吸收单位时间激光能量输入较大时,大部分熔融液滴无法离开烧蚀槽,在烧蚀槽内形成较厚的重铸层和块状堆积物。 展开更多
关键词 纳秒激光 SiC_(f)/SiC复合材料 形貌特征 去除机理
在线阅读 下载PDF
FAP和α_(Ⅴ)β_(3)双靶向分子探针[^(18)F]AlF-NOTAFAPI-RGD的临床前研究及初步临床应用
4
作者 吴晓明 文雪君 +4 位作者 薛云 田国新 林敏 唐铭泽 马福秋 《原子能科学技术》 北大核心 2026年第1期247-256,共10页
为探究氟铝[^(18)F]AlF标记的靶向成纤维细胞激活蛋白(FAP)和整合素α_(Ⅴ)β_(3)受体的异源二聚体探针1,4,7-三氮杂环壬烷-1,4,7-三乙酸-FAP抑制剂精氨酸-甘氨酸-天冬氨酸(NOTA-FAPI-RGD),评价其在FAP表达阳性荷瘤裸鼠模型中的小动物PE... 为探究氟铝[^(18)F]AlF标记的靶向成纤维细胞激活蛋白(FAP)和整合素α_(Ⅴ)β_(3)受体的异源二聚体探针1,4,7-三氮杂环壬烷-1,4,7-三乙酸-FAP抑制剂精氨酸-甘氨酸-天冬氨酸(NOTA-FAPI-RGD),评价其在FAP表达阳性荷瘤裸鼠模型中的小动物PET显像研究和初步临床应用,本研究采用先前研究优化的氟铝标记方法进行[^(18)F]AlF-NOTA-FAPI-RGD标记,并将[^(18)F]AlF-NOTA-FAPI-RGD在HT1080-FAP肿瘤细胞中完成细胞摄取和抑制实验及体外特异性摄取评估,通过荷瘤鼠的PET显像,观察[^(18)F]AlF-NOTA-FAPI-RGD在HT1080-FAP肿瘤模型中的分布。同时分别进行NOTA-FAPI-02、NOTA-RGD和NOTA-FAPI-RGD三种抑制剂与放射性探针共同注射后的PET显像,及[^(18)F]AlF-NOTA-FAPI-02和[^(18)F]AlF-NOTA-RGD的PET显像,以评估体内双靶向特异性。此外,还进行了临床患者的初步PET显像研究,以评估其临床诊断效果。结果显示,本研究成功合成了FAP和α_(Ⅴ)β_(3)受体双靶向放射性探针[^(18)F]AlF-NOTA-FAPI-RGD,其在HT1080-FAP肿瘤细胞内120 min时总摄取率达44.66%±0.26%,在用NOTA-FAPI-02、NOTA-RGD、NOTA-FAPI-RGD分别进行抑制时,放射性摄取降低为0.46%±0.04%、37.61%±1.21%和0.16%±0.02%,P<0.01,证明了其双靶向特异性。荷瘤鼠PET显像结果显示,[^(18)F]AlF-NOTA-FAPI-RGD在体内表现出优异的药代动力学特征,肿瘤摄取在0.5 h可达(9.67±1.23)%ID/g,滞留时间长,给药后6 h肿瘤摄取仍有(8.10±1.35)%ID/g,且肿瘤摄取可以分别被NOTA-FAPI-02、NOTA-RGD和NOTA-FAPI-RGD所抑制。对照组示踪剂[^(18)F]AlF-NOTA-FAPI-02和[^(18)F]AlF-NOTA-RGD展现出更低的肿瘤摄取和滞留。此外,[^(18)F]AlF-NOTA-FAPI-RGD在临床乳腺癌患者的PET图像也展示出更高的病灶放射性摄取(SUVmax=12.41),显著高于[^(18)F]F-FDG(SUVmax=7.45),P<0.01。[^(18)F]AlF-NOTA-FAPI-RGD在体内外实验中均展示了双靶向特异性摄取,相比于单靶点示踪剂具有明显优势,该示踪剂不仅在临床前研究中呈现出良好的成像质量,在初步临床实验中也展现出优异的肿瘤病灶检出率,表明[^(18)F]AlF-NOTA-FAPI-RGD有望成为一种用于检测FAP和/或α_(Ⅴ)β_(3)受体高表达肿瘤的放射性示踪剂,且具有临床应用前景。 展开更多
关键词 [^(18)f]Alf标记 双靶向放射性探针 PET显像 fAPI-RGD
在线阅读 下载PDF
Ramsey numbers of edge-critical graphs versus large generalized fans
5
作者 Taiping Jiang Xinmin Hou 《中国科学技术大学学报》 北大核心 2025年第5期62-66,61,I0002,共7页
Given two graphs G and H,the Ramsey number R(G,H)is the smallest positive integer N such that every 2-coloring of the edges of K_(N)contains either a red G or a blue H.Let K_(N-1)■K_(1,k)be the graph obtained from K_... Given two graphs G and H,the Ramsey number R(G,H)is the smallest positive integer N such that every 2-coloring of the edges of K_(N)contains either a red G or a blue H.Let K_(N-1)■K_(1,k)be the graph obtained from K_(N-1)by adding anew vertexνconnecting k vertices of K_(N-1).A graph G withχ(G)=k+1 is called edge-critical if G contains an edge e such thatχ(G-e)=k.A considerable amount of research has been conducted by previous scholars on Ramsey numbers ofgraphs.In this study,we show that for an edge-critical graph G with x(G)=k+1,when k≥2,1≥2,and n is sufficiently large,R(G,K_(1)+nK_(t))=knt+1 and r,(G,K_(1)+nK_(t))=(k-1)nt+1. 展开更多
关键词 Ramsey number color critical graph generalized fan
在线阅读 下载PDF
Generalized Quasidiagonal Extensions of C^(*)-algebras
6
作者 GAN Yuntao YAO Hongliang CHEN Peixin 《数学进展》 北大核心 2025年第6期1327-1332,共6页
This paper introduced the concept of generalized quasidiagonal extension of C^(*)-algebras and gave some basic properties.We show that the extension algebra preserves quasidiagonality and finitary in generalized quasi... This paper introduced the concept of generalized quasidiagonal extension of C^(*)-algebras and gave some basic properties.We show that the extension algebra preserves quasidiagonality and finitary in generalized quasidiagonal extension.We give also an example of generalized quasidiagonal extension,which is not quasidiagonal extension. 展开更多
关键词 C^(*)-algebra quasidiagonality generalized quasidiagonal extension
原文传递
Dominating Induced Matching of Generalized Petersen Graphs
7
作者 CHEN Ming ZANG Weiqi ZHOU Shan 《数学进展》 北大核心 2025年第6期1223-1232,共10页
A dominating induced matching(DIM)of G is an induced matching that dominates every edge of G.In this note,we completely determine the number of DIMs in the generalized Petersen graph P(n,k).We prove that if P(n,k)is a... A dominating induced matching(DIM)of G is an induced matching that dominates every edge of G.In this note,we completely determine the number of DIMs in the generalized Petersen graph P(n,k).We prove that if P(n,k)is a generalized Petersen graph with n=0(mod 5)and k=2,3(mod 5),then E(P(n,k))can be partitioned into five DIMs.Meanwhile,in the left cases k=0,1,4(mod 5),we build some counterexamples to show that there exist some P(n,k)'s which are DIM-free. 展开更多
关键词 dominating induced matching generalized Petersen graph
原文传递
dPCR方法动态监测T790M突变在EGFR阳性非小细胞肺癌耐药治疗中的指导作用
8
作者 姚铠涛 曾小芸 +3 位作者 连逸恺 林建雄 王双玲 魏丹娜 《分子诊断与治疗杂志》 2026年第1期131-134,共4页
目的本研究旨在探讨使用数字PCR(dPCR)方法动态监测血浆EGFR T790M突变的可行性,并评估基于血浆T790M突变检测的早期干预是否可作为EGFR突变非小细胞肺癌患者EGFR-TKI转换治疗的最佳时机。方法初筛2021年7月至2023年12月在汕头大学医学... 目的本研究旨在探讨使用数字PCR(dPCR)方法动态监测血浆EGFR T790M突变的可行性,并评估基于血浆T790M突变检测的早期干预是否可作为EGFR突变非小细胞肺癌患者EGFR-TKI转换治疗的最佳时机。方法初筛2021年7月至2023年12月在汕头大学医学院第二附属医院75例接受埃克替尼治疗的EGFR阳性Ⅳ期NSCLC患者,T790M突变率为53.3%,最终纳入40例患者。试验组(n=18)在血浆检测到T790M突变后更换第三代EGFR-TKI治疗,对照组(n=22)在影像学进展及T790M突变后更换EGFR-TKI治疗。比较两组的临床疗效、无进展生存期(PFS)及不良反应。结果试验组的客观缓解率(ORR)为72.2%,对照组为68.2%,两组差异无统计学意义(P>0.05)。试验组的疾病控制率(DCR)为94.4%,对照组为81.9%,差异无统计学意义(P>0.05)。试验组的中位PFS显著长于对照组,差异有统计学意义(14.8个月vs 10.3个月,P=0.024)。两组的不良反应均为1~2级,皮疹、腹泻及肝功能异常的发生率比较,差异无统计学意义(P>0.05)。结论使用dPCR动态监测血浆EGFR T790M突变,可较影像学更早识别一代EGFR-TKI耐药,从而及时转换三代EGFR-TKI治疗,延缓疾病进展,是一种经济且临床可行的策略。 展开更多
关键词 非小细胞肺癌 EGfR T790M 数字PCR 三代酪氨酸激酶抑制剂
暂未订购
牦牛源大肠杆菌F17菌毛A亚基和G亚基蛋白免疫保护效果比较分析
9
作者 章石楠 韩生义 +8 位作者 石田 李淑萍 胡国元 高瑞 田嘉琪 周雯雯 屈亚鹏 陈逸雅 李生庆 《畜牧与兽医》 北大核心 2026年第2期61-70,共10页
为评价牦牛源大肠杆菌F17菌毛A亚基(F17A)和G亚基(F17G)的免疫原性,以本实验室分离的大肠杆菌QML2206-1为研究对象,采用生物信息学软件将F17A和F17G蛋白进行理化性质分析、跨膜结构和信号肽预测、二级结构和保守结构域预测;诱导表达并纯... 为评价牦牛源大肠杆菌F17菌毛A亚基(F17A)和G亚基(F17G)的免疫原性,以本实验室分离的大肠杆菌QML2206-1为研究对象,采用生物信息学软件将F17A和F17G蛋白进行理化性质分析、跨膜结构和信号肽预测、二级结构和保守结构域预测;诱导表达并纯化F17A和F17G蛋白;将纯化后的重组蛋白分为高(100μg/只)、低(50μg/只)剂量组免疫小鼠,利用ELISA方法检测小鼠特异性免疫球蛋白G(Ig G)抗体水平及血清中细胞因子簇分化抗原4(CD4)、簇分化抗原8(CD8)、肿瘤坏死因子α(TNF-α)、γ干扰素(IFN-γ)、白细胞介素4(IL-4)的表达水平,并通过小鼠攻毒保护试验评价其免疫保护效果。结果显示:2种蛋白均为稳定蛋白且具有信号肽区域;F17A蛋白无跨膜结构域,存在1个菌毛蛋白A(Fim A)保守结构域,F17G蛋白有跨膜结构域,存在Fim A和菌毛黏附素凝集素(Fim-adh-lectin) 2个保守结构域;2种蛋白的二级结构主要以无规则卷曲为主。经原核表达成功获得相对分子质量约为37和54 kDa的重组蛋白;重组蛋白免疫小鼠后,F17A高、低剂量组血清特异性Ig G抗体效价最高可达1∶32 000和1∶16 000,F17G高、低剂量组血清特异性Ig G抗体效价最高可达1∶32 000和1∶25 600;与对照组相比,免疫小鼠血清中CD4、CD8、TNF-α、IFN-γ及IL-4的表达水平均有所升高(P<0.05)。分别用最小致死量(MLD)、1.5 MLD、2 MLD、2.5 MLD攻毒小鼠后,除F17A高剂量免疫组最高仅能保护小鼠抵抗1.5 MLD攻毒菌量外,其余免疫组小鼠对4种攻毒菌量的存活率均为100%。综上,F17A和F17G重组蛋白具有良好的抗原性和一定的免疫保护作用。本研究为下一步基于F17蛋白的牦牛适用性大肠杆菌基因工程亚单位疫苗的研制提供了试验依据。 展开更多
关键词 牦牛源大肠杆菌 f17蛋白 原核表达 生物信息学分析 免疫原性
在线阅读 下载PDF
Temperature control for liquid-cooled fuel cells based on fuzzy logic and variable-gain generalized supertwisting algorithm
10
作者 CHEN Lin JIA Zhi-huan +1 位作者 DING Tian-wei GAO Jin-wu 《控制理论与应用》 北大核心 2025年第8期1596-1605,共10页
The liquid cooling system(LCS)of fuel cells is challenged by significant time delays,model uncertainties,pump and fan coupling,and frequent disturbances,leading to overshoot and control oscillations that degrade tempe... The liquid cooling system(LCS)of fuel cells is challenged by significant time delays,model uncertainties,pump and fan coupling,and frequent disturbances,leading to overshoot and control oscillations that degrade temperature regulation performance.To address these challenges,we propose a composite control scheme combining fuzzy logic and a variable-gain generalized supertwisting algorithm(VG-GSTA).Firstly,a one-dimensional(1D)fuzzy logic controler(FLC)for the pump ensures stable coolant flow,while a two-dimensional(2D)FLC for the fan regulates the stack temperature near the reference value.The VG-GSTA is then introduced to eliminate steady-state errors,offering resistance to disturbances and minimizing control oscillations.The equilibrium optimizer is used to fine-tune VG-GSTA parameters.Co-simulation verifies the effectiveness of our method,demonstrating its advantages in terms of disturbance immunity,overshoot suppression,tracking accuracy and response speed. 展开更多
关键词 liquid-cooled fuel cell temperature control generalized supertwisting algorithm fuzzy control equilibrium optimizer
在线阅读 下载PDF
Compact Commutators of Bilinear Fractional Integral Operators on Generalized Morrey Spaces
11
作者 KU Fuli 《Wuhan University Journal of Natural Sciences》 2025年第5期463-470,共8页
This paper considers compactness of the commutator[b,I_(α)]i(i=1,2),where I_(α)is a bilinear fractional integral operator,and b is a function in generalized Campanato spaces with variable growth condition.The author... This paper considers compactness of the commutator[b,I_(α)]i(i=1,2),where I_(α)is a bilinear fractional integral operator,and b is a function in generalized Campanato spaces with variable growth condition.The author gives sufficient conditions for the compactness of[b,I_(α)],(i=1,2)from the product of generalized Morrey spaces to generalized Morrey spaces. 展开更多
关键词 fractional integral COMMUTATORS COMPACTNESS generalized Campanato spaces generalized Morrey spaces
原文传递
GÂTEAUX DIRECTIONAL DIFFERENTIABILITY OF THE GENERALIZED METRIC PROJECTION IN BANACH SPACES
12
作者 Jinlu LI 《Acta Mathematica Scientia》 2025年第4期1597-1618,共22页
Let X be a real uniformly convex and uniformly smooth Banach space and C a nonempty closed and convex subset of X.Let Π_(C):X→C denote the generalized metric projection operator introduced by Alber in[1].In this pap... Let X be a real uniformly convex and uniformly smooth Banach space and C a nonempty closed and convex subset of X.Let Π_(C):X→C denote the generalized metric projection operator introduced by Alber in[1].In this paper,we define the Gâteaux directional differentiability of Π_(C).We investigate some properties of the Gâteaux directional differentiability of Π_(C).In particular,if C is a closed ball,or a closed and convex cone(including proper closed subspaces),or a closed and convex cylinder,then,we give the exact representations of the directional derivatives of Π_(C).By comparing the results in[12]and this paper,we see the significant difference between the directional derivatives of the generalized metric projection operator Π_(C) and the Gâteaux directional derivatives of the standard metric projection operator PC. 展开更多
关键词 uniformly convex and uniformly smooth Banach space the generalized metric projection directional differentiability of the generalized metric projection directional derivative of the generalized metric projection
在线阅读 下载PDF
F9基因剪接位点共识区域中内含子突变造成的异常剪接模式研究
13
作者 马金 沈滟 +1 位作者 沈国民 高蒙 《南京医科大学学报(自然科学版)》 北大核心 2026年第1期55-67,共13页
目的:确定B型血友病致病基因F9的剪接位点共识序列,并筛选序列相关致病突变,以确定F9基因内含子中主要剪接调控位点。方法:从凝血因子Ⅸ(coagulation factorⅨ,FⅨ)突变数据库(FactorⅨVariant Database)中收集内含子突变,依据F9基因剪... 目的:确定B型血友病致病基因F9的剪接位点共识序列,并筛选序列相关致病突变,以确定F9基因内含子中主要剪接调控位点。方法:从凝血因子Ⅸ(coagulation factorⅨ,FⅨ)突变数据库(FactorⅨVariant Database)中收集内含子突变,依据F9基因剪接位点保守性分析筛选可能影响剪接的致病突变,重点关注患病人数多且致病效应强的突变位点所在区域,结合3种RNA剪接预测软件对突变导致的剪接效应进行预测。之后,采用微型基因剪接检测体系,对所选突变的剪接效应进行体外检测并通过变性毛细管电泳检测不同转录本所占比例,以明确各突变剪接效应的差异,进而确定F9基因剪接共识序列中影响剪接的关键位点。针对具有蛋白编码能力的异常剪接体,构建体外表达体系,通过Western blot及活化部分凝血活酶时间综合评估异常剪接体的胞内表达、胞外分泌及凝血活性状态。结果:序列与突变分析确定F9基因外显子4剪接位点附近的15个突变为靶突变,微型基因剪接实验证实其中14个突变可导致异常剪接,对比软件预测结果,进一步证实计算机预测具有局限性,不能准确预测具体剪接模式及其比例。证实了内含子上经典位点GT-AG的保守性,同时发现供体端+5G同样有利于剪接位点的正确识别,而相对保守的+7A则未对剪接位点识别产生重要作用,此外,模拟经典“AG”序列的深层内含子突变会造成剪接识别错位,显著提高异常剪接比例。蛋白表达与活性分析结果显示,p.D93-G125delinsG和p.G94-D131del两种异常剪接突变体的抗原合成及活性状态与野生型相比差异均有统计学意义(P<0.01)。结论:GT-AG是影响剪接调控的主要位点,F9基因内含子4剪接供体端非保守位点的+5G同样对剪接有调控作用。对不同突变造成剪接调控模式差异进行总结分析,可为大数据分析提供理论依据,并提高生物信息学预测的准确性。 展开更多
关键词 f9基因 内含子突变 剪接异常 B型血友病 致病机制
原文传递
Application of Generalized Argumentation in the Context of Chinese Doctor-patient Communication—An Argument Recognition Mixed with Statistical Approach
14
作者 Niu Ju Yanjin Chen 《逻辑学研究》 2025年第6期88-103,共16页
This study aims to reveal the prototypical argumentative patterns employed in situations where patient distrust arises in China.Based on the quantitative analysis of data from a general social survey,we focus on a dis... This study aims to reveal the prototypical argumentative patterns employed in situations where patient distrust arises in China.Based on the quantitative analysis of data from a general social survey,we focus on a distinctive phenomenon that while a majority of Chinese respondents trust the medical profession as a whole,significant distrust exists toward doctors'skills and ethics,particularly among older,urban,and higher income populations.Qualtatively,we employ Generalized Argumentation Theory to analyze Chinese clinical dialogues,identifying three kinds of prototypical argumentative patterns in situations of patient distrust.Methodologically,this article shows the value of combining statistical analysis with goal-oriented Generalized Argumentation research to reconcile the tricky trust phenomenon of Chinese doctor-patient communication. 展开更多
关键词 generalized argumentation general social surveywe argument recognition generalized argumentation theory quantitative analysis statistical approach patient distrust Chinese doctor patient communication
暂未订购
Herglotz type Noether theorems of nonholonomic systems with generalized fractional derivatives
15
作者 Yuan-Yuan Deng Yi Zhang 《Theoretical & Applied Mechanics Letters》 2025年第2期179-187,共9页
Fractional calculus is widely used to deal with nonconservative dynamics because of its memorability and non-local properties.In this paper,the Herglotz principle with generalized operators is discussed,and the Herglo... Fractional calculus is widely used to deal with nonconservative dynamics because of its memorability and non-local properties.In this paper,the Herglotz principle with generalized operators is discussed,and the Herglotz type equations for nonholonomic systems are established.Then,the Noether symmetries are studied,and the conserved quantities are obtained.The results are extended to nonholonomic canonical systems,and the Herglotz type canonical equations and the Noether theorems are obtained.Two examples are provided to demonstrate the validity of the methods and results. 展开更多
关键词 Nonholonomic system Herglotz principle Noether theorem generalized operators
在线阅读 下载PDF
Generalized uncertainty principle from the regularized self-energy
16
作者 Kimet Jusufi Ahmed Farag Ali 《Communications in Theoretical Physics》 2025年第1期92-100,共9页
We use the Schrödinger–Newton equation to calculate the regularized self-energy of a particle using a regular self-gravitational and electrostatic potential derived in string T-duality.The particle mass M is no ... We use the Schrödinger–Newton equation to calculate the regularized self-energy of a particle using a regular self-gravitational and electrostatic potential derived in string T-duality.The particle mass M is no longer concentrated into a point but is diluted and described by a quantum-corrected smeared energy density resulting in corrections to the energy of the particle,which is interpreted as a regularized self-energy.We extend our results and find corrections to the relativistic particles using the Klein–Gordon,Proca and Dirac equations.An important finding is that we extract a form of the generalized uncertainty principle(GUP)from the corrected energy.This form of the GUP is shown to depend on the nature of particles;namely,for bosons(spin 0 and spin 1)we obtain a quadratic form of the GUP,while for fermions(spin 1/2)we obtain a linear form.The correlation we find between spin and GUP may offer insights for investigating quantum gravity. 展开更多
关键词 generalized uncertainty principle T-DUALITY regularized self-energy
原文传递
ON GENERALIZED KISSING NUMBERS OF CONVEX BODIES
17
作者 Yiming LI Chuanming ZONG 《Acta Mathematica Scientia》 2025年第1期72-95,共24页
In 1694,Gregory and Newton proposed the problem to determine the kissing number of a rigid material ball.This problem and its higher dimensional generalization have been studied by many mathematicians,including Minkow... In 1694,Gregory and Newton proposed the problem to determine the kissing number of a rigid material ball.This problem and its higher dimensional generalization have been studied by many mathematicians,including Minkowski,van der Waerden,Hadwiger,Swinnerton-Dyer,Watson,Levenshtein,Odlyzko,Sloane and Musin.In this paper,we introduce and study a further generalization of the kissing numbers for convex bodies and obtain some exact results,in particular for balls in dimensions three,four and eight. 展开更多
关键词 convex body generalized kissing number Eg lattice
在线阅读 下载PDF
MULTIPLE POSITIVE SOLUTIONS FOR THE GENERALIZED QUASILINEAR SCHRÖDINGER EQUATION IN R^(N)
18
作者 Yongpeng CHEN Zhipeng YANG 《Acta Mathematica Scientia》 2025年第5期2010-2028,共19页
In this paper,we investigate the generalized quasilinear Schrödinger equation:-div(g2(u)▽u)+g(u)g'(u)|▽u|2+u=P(εx)|u|αp-2u,x∈R^(N),where N>3,g:R→R+is a C1 even function,g(0)=1,g'(s)≥0 for all s... In this paper,we investigate the generalized quasilinear Schrödinger equation:-div(g2(u)▽u)+g(u)g'(u)|▽u|2+u=P(εx)|u|αp-2u,x∈R^(N),where N>3,g:R→R+is a C1 even function,g(0)=1,g'(s)≥0 for all s≥0,g(s)=β|s|α-1+O(|s|γ-1)as s→∞for some constantsα∈[1,2],β>0,γ<αand(α-1)g(s)≥g'(s)s for all s≥0,ε>0 is a positive parameter,and p∈(2,2^(*)).We will study the impact of the nonlinearity’s coefficient P(x)on the quantity of positive solutions. 展开更多
关键词 variational methods generalized quasilinear equation
在线阅读 下载PDF
A Nonlinear Analysis Approach to Asymptotic Behavior of Solutions of the Generalized Emden-Fowler Equation
19
作者 Liangping QI Guowei ZONG 《Journal of Mathematical Research with Applications》 2025年第4期521-536,共16页
We introduce a new method to study the asymptotic behavior of solutions on the basis of the continuation theory for k-set contractions.We apply this technique to show the existence of nontrivial decaying solutions to ... We introduce a new method to study the asymptotic behavior of solutions on the basis of the continuation theory for k-set contractions.We apply this technique to show the existence of nontrivial decaying solutions to the sup-linear generalized Emden-Fowler equation and the existence of asymptotically linear solutions to the sub-linear one. 展开更多
关键词 generalized Emden-fowler equation asymptotic behavior k-set contractions
原文传递
Efficacy of electroacupuncture for cervical spondylosis-related pain in patients with generalized anxiety disorder
20
作者 Zhe Li Yu Gao +1 位作者 Dong Yan Yi-Hui Feng 《World Journal of Psychiatry》 2025年第11期168-178,共11页
BACKGROUND Cervical spondylosis(CS)frequently co-occurs with generalized anxiety disorder(GAD),presenting a complex clinical challenge.Managing CS-related pain in patients with GAD is particularly challenging because ... BACKGROUND Cervical spondylosis(CS)frequently co-occurs with generalized anxiety disorder(GAD),presenting a complex clinical challenge.Managing CS-related pain in patients with GAD is particularly challenging because of the bidirectional relationship between pain and anxiety,necessitating integrated treatment strategies.AIM To evaluate the efficacy of electroacupuncture(EA)in treating CS-related pain and anxiety in patients with GAD.METHODS This retrospective cohort study analyzed data from 83 patients with CS-related pain and GAD who received EA treatment over 2-year period.Pain intensity was assessed using the visual analog scale,and anxiety symptoms were measured using the Hamilton Anxiety Rating Scale.Additionally,neuroinflammatory markers,including interleukin-6,tumor necrosis factor-alpha,and high-sensitivity C-reactive protein,were examined.Outcomes were evaluated at baseline,after 4 weeks,and after 8 weeks of treatment.RESULTS EA treatment significantly reduced CS-related pain(mean visual analog scale reduction:3.24±1.18;P<0.001)and improved anxiety symptoms(mean Hamilton Anxiety Rating Scale reduction:7.83±2.65;P<0.001)after 8 weeks of treatment.Neuroinflammatory markers also showed significant reductions,with interleukin-6 and tumor necrosis factor-alpha levels decreasing by 32.7%and 28.5%,respectively(P<0.01).Pain reduction was significantly correlated with improvements in anxiety symptoms(r=0.68;P<0.001)and a decrease in inflammatory markers(r=0.54;P<0.01).CONCLUSION EA demonstrates significant efficacy in reducing CS-related pain in patients with comorbid GAD,along with concurrent improvements in anxiety symptoms and neuroinflammatory profiles.These findings suggest that EA may offer a valuable integrative approach for managing this complex clinical presentation,potentially addressing both pain and anxiety through the modulation of neuroinflammatory pathways. 展开更多
关键词 ELECTROACUPUNCTURE Cervical spondylosis generalized anxiety disorder NEUROINfLAMMATION Pain management
暂未订购
上一页 1 2 250 下一页 到第
使用帮助 返回顶部