期刊文献+
共找到1,174篇文章
< 1 2 59 >
每页显示 20 50 100
Efficacy observation on cervical spondylosis of nerve root type treated by the warm needling at Jiájǐ(夹脊EX-B 2) and tapping with plum-blossom needle 被引量:1
1
作者 刘敏娟 穆敬平 +2 位作者 郑苏 任昌菊 WANG Fang 《World Journal of Acupuncture-Moxibustion》 2013年第4期6-10,共5页
Objective To observe the clinical effect on cervical spondylosis of nerve root type treated by warm needling therapy at Jiáj (夹脊 EX-B 2) and plum-blossom needle therapy. Methods According to the random number... Objective To observe the clinical effect on cervical spondylosis of nerve root type treated by warm needling therapy at Jiáj (夹脊 EX-B 2) and plum-blossom needle therapy. Methods According to the random number table, 150 cases of cervical spondylosis of nerve root type were randomized into an acupuncture-moxibustion group (75 cases) and a control group (75 cases). In the acupuncture-moxibustion group, the warm needling at EX-B 2 and tapping with plum-blossom needle were applied. EX-B 2 on the affected segments were selected and stimulated with warm needling technique for 20– 30 min. Afterward, the plum-blossom needle was used to tap the skin around the acupoints, for 3 min on each site. The treatment was given once every day. Seven treatments made one session. The interval between two sessions was 1 day. In the control group, the medication was used in combination with traction therapy. The intravenous drip with 5% glucose 250 mL and compound salvia miltiorrhiza injection 40 mL was used, once a day. In traction treatment, the patient was in a sitting position, neck anteflexion at 15°–30°, traction force at 10%–20% of the body mass, for 20–30 min in each time. The treatment was given once every day. The appointed person evaluated therapeutic effects after the three sessions of treatment in the two groups. Results The clinical curative rate was 49.3% (37/75) and the total effective rate was 94.7% (71/75) in the acupuncture-moxibustion group and those were 24.0% (18/75) and 81.3% (61/75) respectively in the control group. The total effective rate and clinical curative rate in the acupuncture-moxibustion group were superior to the control group (both P0.05). In the comparison of the duration of treatment and effect in the cured patients between the two groups, the curative rate in the 1st session of treatment in the acupuncture-moxibustion group was higher than that in the control group (P0.05). In the comparison of the 6-month follow-up visit in the cured patients between the two groups, the effect in the acupuncture-moxibustion group was much more stable (P0.05). Conclusion The warm needling therapy at EX-B 2 and tapping therapy with plum-blossom needle achieve the significant effect on cervical spondylosis of nerve root type. 展开更多
关键词 cervical spondylosis of nerve root type warm needling therapy Jiáj(夹脊 EX-B 2) tapping therapy with plum-blossom needle
原文传递
In-situ Horizontal Extrusion Test of Herbaceous Root-Soil with Different Root Types
2
作者 Fangcui Liu Shengwen Qi +8 位作者 Shenglin Qi Xiaokun Hou Yanrong Li Guangming Luo Lei Xue Xueliang Wang Juanjuan Sun Songfeng Guo Bowen Zheng 《Journal of Earth Science》 SCIE CAS CSCD 2024年第3期918-928,共11页
The influence of different types of roots on the soil is complex and still remains unclear.Four in-situ extrusion tests were conducted on two types of root systems,namely fibrous and tap root system,for three plants,E... The influence of different types of roots on the soil is complex and still remains unclear.Four in-situ extrusion tests were conducted on two types of root systems,namely fibrous and tap root system,for three plants,Eleusine indica,Potentilla anserine,and Artemisia argyi,according to the classification in Botany,and the thrust-displacement curves and failure patterns of different samples were analysed by comparison to fill the aforementioned gap.Results reveal that the roots can reduce the characteristics of soil brittleness and enhance its capability to resist large deformation,and different root types contribute different effects to the strain-hardening behavior of the root-soil mass.The contribution of the fibrous root system to strength is limited,whilst the tap root system substantially enhances strength and stiffness.Results of failure patterns show that fibrous and tap root systems affect soil solidification and surface cracking reduction.However,the effect of the tap root system depends on the composition of lateral and tap roots:long and rich lateral roots are effective for resisting the creation of cracks,but thick tap roots with few and thin lateral roots may lead to several surface cracks. 展开更多
关键词 root types fibrous root tap root in-situ horizontal extrusion test root-soil cracks slope protection.
原文传递
A CLINICAL OBSERVATION ON THE THERAPEUTIC EFFECT OF CERVICAL SPONDYLOPATHY OF NERVE ROOT TYPE TREATED BY COMBINED CERVICAL TRACTION AND ELECTROACUPUNCTURE
3
作者 何涛 何岚 《World Journal of Acupuncture-Moxibustion》 2004年第4期20-23,共4页
Objective: To observe the therapeutic effect of combined cervical traction and electroacupuncture (EA) on Cervical Spondylopathy of Nerve Root Type (CSNRT). Methods: 145 patients diagnosed as CSNRT were randomized int... Objective: To observe the therapeutic effect of combined cervical traction and electroacupuncture (EA) on Cervical Spondylopathy of Nerve Root Type (CSNRT). Methods: 145 patients diagnosed as CSNRT were randomized into 3 groups: combined treatment group, EA group, and cervical traction (CT) group. The combined group was treated with traction followed by EA of Dazhui (大椎 GV 14), Fengchi (风池 GB 20), cervical Jiaji (夹脊 EX-B 2), etc.. Patients of two control groups were only treated by either CT or EA. Results: The markedly-effective rate and total effective rate were 76.0% and 94.0% respectively in the combined treatment group, 62.5% and 81.25% respectively in CT group, and 63.82% and 82.97% respectively in EA group. The therapeutic effect of the combined treatment group was significantly superior to that of two control groups (P<0.05). At 6-month follow-up, the above two markedly-effective and total effective rates in the combined treatment group remained 74.0% and 92.0%, still significantly higher than that in two control groups. Conclusion: Combining cervicle traction with EA treatment can effectively eliminate or relieve the symptoms and signs in patients with nerve root type cervical spondylopathy. 展开更多
关键词 Cervical spondylopathy of nerve root type Cervical traction Electroacupuncture
暂未订购
CLINICAL OBSERVATION ON TREATMENT OF NERVE-ROOT TYPE CERVICAL SPONDYLOSIS WITH ACUPUNCTURE, TRACTION PLUS SELF-EXERCISE OF QIGONG
4
作者 李庆雯 郭义 +2 位作者 王惠琴 郑万鹏 郑昆仑 《World Journal of Acupuncture-Moxibustion》 2002年第2期45-47,共3页
Purpose: To observe the therapeutic effect of acupuncture combined with traction and Qigong exercise for treatment of nerve root type cervical spondylosis. Methods: A total of 130 nerve root type cervical spondylosis ... Purpose: To observe the therapeutic effect of acupuncture combined with traction and Qigong exercise for treatment of nerve root type cervical spondylosis. Methods: A total of 130 nerve root type cervical spondylosis patients were randomly divided into acupuncture + traction + Qigong exercise (ATQE) group (n=59), acupuncture + Qigong exercise (AQE) group (n=40) and traction + Qigong exercise (TQE) group (n=31). Main acupoints used were Fengchi (GB 20) and cervical Jiaji (EX B 2) on the affected side. Results: After one month’s treatment, in ATQE, AQE and TQE groups, 43 (72.88%), 18 (45.00%) and 12 (45.16%) had remarkable amelioration, 14 (23.72%), 14 (35.00%) and 10 (32.26%) were effective, and 2 (3.39%), 8 (20.00%) and 7 (22.58%) had no apparent changes with the total effective rates being 96.61%, 80.00% and 77.41% respectively. The therapeutic effect of ATQE group was significantly superior to that of AQE and TQE groups (P<0.01). 展开更多
关键词 Acupuncture Mechanical traction Qigong exercise Nerve root type cervical spondylosis
暂未订购
Wet Cupping Therapy Improves Local Blood Perfusion and Analgesic Effects in Patients with Nerve-Root Type Cervical Spondylosis 被引量:42
5
作者 MENG Xiang-wen WANG Ying +6 位作者 PIAO Sheng-ai LV Wen-tao ZHU Cheng-hui MU Ming-yuan LI Dan-dan LIU Hua-peng GUO Yi 《Chinese Journal of Integrative Medicine》 SCIE CAS CSCD 2018年第11期830-834,共5页
Objective: To observe wet cupping therapy(WCT) on local blood perfusion and analgesic effects in patients with nerve-root type cervical spondylosis(NT-CS). Methods: Fifty-seven NT-CS patients were randomly divid... Objective: To observe wet cupping therapy(WCT) on local blood perfusion and analgesic effects in patients with nerve-root type cervical spondylosis(NT-CS). Methods: Fifty-seven NT-CS patients were randomly divided into WCT group and Jiaji acupoint-acupuncture(JA) group according a random number table. WCT group(30 cases) was treated with WCT for 10 min, and JA group(27 cases) was treated with acupuncture for 10 min. The treatment efficacies were evaluated with a Visual Analogue Scale(VAS). Blood perfusion at Dazhui(GV 14) and Jianjing(GB 21) acupoints(affected side) was observed with a laser speckle flowmetry, and its variations before and after treatment in both groups were compared as well. Results: In both groups, the VAS scores significantly decreased after the intervention(P〈0.01), while the blood perfusion at the two acupoints significantly increased after intervention(P〈0.05); however, the increasement magnitude caused by WCT was obvious compared with JA(P〈0.05). Conclusion: WCT could improve analgesic effects in patients with NT-CS, which might be related to increasing local blood perfusion of acupunct points. 展开更多
关键词 wet cupping nerve-root type cervical spondylosis blood perfusion amount acupuncture Jiaji acupoint
原文传递
The type, position and age effect on the cutting reproduction of Picea crassifolia and its rooting mechanism in the Qilian Mountains 被引量:7
6
作者 Jianjun Kang Wenzhi Zhao +3 位作者 Ming Zhao Guangyu Li Jiqiang Zhang Zhisheng Zhang 《Journal of Forestry Research》 SCIE CAS CSCD 2015年第4期993-1002,共10页
Picea crassifolia Kom, a perennial arbor spe- cies is recognized as one of the most adaptable plants found to date in Qilian Mountains. To explore the cutting reproduction technology of P. crassifolia and reveal its r... Picea crassifolia Kom, a perennial arbor spe- cies is recognized as one of the most adaptable plants found to date in Qilian Mountains. To explore the cutting reproduction technology of P. crassifolia and reveal its rooting mechanism, cuttings of P. crassifolia with different cutting types (softwood, hardwood and root), positions (top, upper, middle and bottom) and ages (7, 10, 15, 20, 25 year-old) were cultivated in a field experiment. One- year old softwood and hardwood cuttings were collected from 7-, 10-, 15-, 20-, and 25 year-old healthy ortets to analyze the changes from endogenous hormones and organic nutrients. Results indicate that the softwood cut- tings (0.5-1.0 cm in diameter) from upper branches of 15 year-old ortets shows better growth performance by improving rooting indexes, including a significant increasein rooting rate and a decrease in basal rot rate. Concomi- tantly, increasing rooting quantity and root length also increased. It is noteworthy that the high rooting rate of P. crassifolia cuttings due to its ability to accumulate high concentrations of indole-3-acetic acid (IAA) and total carbon (TC) rather than abscisic acid (ABA) and total nitrogen (TN). The rooting rate was mainly regulated by the IAA/ABA and TC/TN ratio. In summary, our results suggest that the softwood cuttings (0.5-1.0 cm in diameter) from upper branches of 15 year-old P. crassifolia can be considered as an effective strategy to improve cutting rooting rate, and the IAA/ABA and TC/TN ratio was one of the main factors limiting the cutting rooting rate of P. crassifolia. 展开更多
关键词 Picea crassifolia Kom type Positionand age effect Cutting reproduction rooting rate HORMONES Organic substances
在线阅读 下载PDF
Effects of curcumin on sodium currents of dorsal root ganglion neurons in type 2 diabetic neuropathic pain rats
7
作者 Bo MENG Lu-lu SHEN +4 位作者 Xiao-ting SHI Yong-sheng GONG Xiao-fang FAN Jun LI Hong CAO 《中国应用生理学杂志》 CAS CSCD 2015年第6期541-548,共8页
Along with the development of economy and society, type 2 diabetic mellitus(T2DM) has become one of the most common diseases at the global level. As one of the complications of T2 DM, diabetic neuropathic pain(DNP) st... Along with the development of economy and society, type 2 diabetic mellitus(T2DM) has become one of the most common diseases at the global level. As one of the complications of T2 DM, diabetic neuropathic pain(DNP) stubbornly and chronically affects the health and life of human beings. In the pain field, dorsal root ganglion(DRG) is generally considered as the first stage of the sensory pathway where the hyperexcitability of injured neurons is associated with different kinds of peripheral neuropathic pains. The abnormal electrophysiology is mainly due to the changed properties of voltage-gated sodium channels(VGSCs) and the increased sodium currents(INa). Curcumin is an active ingredient extracted from turmeric and has been demonstrated to ameliorate T2 DM and its various complications including DNP effectively. The present study demonstrates that the INa of small-sized DRG neurons are significantly increased with the abnormal electrophysiological characteristics of VGSCs in type 2 diabetic neuropathic pain rats. And these abnormalities can be ameliorated efficaciously by a period of treatment with curcumin. 展开更多
关键词 背根神经节神经元 2型糖尿病 姜黄素 钠电流 神经痛 大鼠 DRG神经元 电压门控钠通道
在线阅读 下载PDF
4种不同根型树种对干旱胁迫的生理响应差异——基于光合-荧光-渗透调节的协同分析
8
作者 杨佳伟 戴薛 +6 位作者 辜忠春 兰竹 王晓荣 刘学全 胡琦 庞宏东 付甜 《生态学报》 北大核心 2026年第5期2654-2667,共14页
在全球气候变化加剧极端干旱事件的背景下,解析不同根型树木的干旱响应机制对森林保育和生态恢复至关重要。以亚热带典型深根型树种樟(Camphora officinarum)、栓皮栎(Quercus variabilis)及浅根型树种杉木(Cunninghamia lanceolata)、... 在全球气候变化加剧极端干旱事件的背景下,解析不同根型树木的干旱响应机制对森林保育和生态恢复至关重要。以亚热带典型深根型树种樟(Camphora officinarum)、栓皮栎(Quercus variabilis)及浅根型树种杉木(Cunninghamia lanceolata)、毛竹(Phyllostachys edulis)的2年生幼苗为对象,采用自然失水法模拟持续42 d的干旱处理,系统监测了水分状况、光合-叶绿素荧光特性、渗透调节物质及氧化损伤指标的动态变化。主要结果表明:(1)根系构型是抗旱性差异的关键结构基础。深根型树种凭借更长的根系和更高的根长密度,在有限土壤深度内更有效地维持水分吸收,显著延缓了叶片脱水和叶绿素降解。樟叶片相对含水量降幅22.78%,相对叶绿素含量(SPAD)值降幅8.32%;栓皮栎叶片相对含水量降幅25.86%,SPAD值降幅34.48%。而浅根型树种水分和叶绿素损失严重,杉木叶片相对含水量降幅70.43%,SPAD值降幅56.04%;毛竹叶片相对含水量降幅60.43%。(2)深根型展现协同抗旱优势。深根型通过增强非光化学淬灭缓解光损伤,维持较长时间的光系统Ⅱ功能,栓皮栎非光化学淬灭系数(NPQ)早期骤增170.10%,樟NPQ持续增长35.38%;同时持续积累渗透调节物质,樟后期可溶性糖增至2.20倍,栓皮栎后期脯氨酸增至46.46倍,并有效控制膜脂过氧化(樟丙二醛为初始值211.72%,栓皮栎丙二醛降至初始值52.17%)。冗余分析表明其生理响应主要受土壤含水率驱动。(3)浅根型易受干旱累积效应影响。浅根型因依赖易耗竭的浅层水分,导致水分状态和光合结构急剧恶化,光保护机制短暂激活后崩溃。虽胁迫中期渗透调节物质激增,杉木脯氨酸28 d时增至32.41倍,毛竹28 d时增至153.17倍,但最终无法阻止严重的膜损伤,杉木和毛竹末期丙二醛分别陡升至初始值的168.99%和238.19%,生理功能崩溃,其损伤模式呈现显著的干旱时间累积效应。(4)生活型策略调控同根型响应路径。同为深根型,樟(常绿)倾向于维持叶片功能与持续碳获取;栓皮栎(落叶)则表现出程序性衰老特征,为再生保存资源。综上,根系构型通过水分获取主导关键生理响应,深根型树种在水分维持、光系统保护和渗透调节方面的综合协同优势赋予了其更强的干旱适应性。研究结果支持在亚热带季风区生态恢复中优先选择深根型乡土树种以提升森林抵御极端干旱的能力。 展开更多
关键词 干旱胁迫 根系构型 光合作用 叶绿素荧光 渗透调节
在线阅读 下载PDF
中国人群根管治疗与非根管治疗根折后牙的锥形束CT特征比较
9
作者 傅承艺 潘笑 +1 位作者 刘澍 林梓桐 《华西口腔医学杂志》 北大核心 2026年第1期113-119,共7页
目的探究根管治疗与非根管治疗根折后牙的临床及锥形束CT(CBCT)特征是否存在差异。方法回顾性收集CBCT检查发现的305例患者的340颗根折后牙,根据根折牙是否行根管治疗分为根管治疗牙和非根管治疗牙。记录根折患者的年龄和性别,在CBCT图... 目的探究根管治疗与非根管治疗根折后牙的临床及锥形束CT(CBCT)特征是否存在差异。方法回顾性收集CBCT检查发现的305例患者的340颗根折后牙,根据根折牙是否行根管治疗分为根管治疗牙和非根管治疗牙。记录根折患者的年龄和性别,在CBCT图像上评估根折发生的牙位、牙根位、根折类型(纵折、横折、斜折、不规则折)、牙根纵折方向、横折线位置及根折线周围骨吸收情况。结果1)非根管治疗与根管治疗根折的牙位差异有统计学意义(P=0.028)。二者根折的牙位均以上颌磨牙和下颌磨牙为主,但根管治疗牙前磨牙的发生比例(27.2%)高于非根管治疗牙(14.2%)。2)非根管治疗与根管治疗根折的牙根位差异有统计学意义(P=0.037),最常见牙根位均是下颌磨牙近中根(发生率分别为36.4%、32.2%),但排名第二的牙根位分别是上颌磨牙腭根(23.0%)、上颌前磨牙牙根(20.3%)。3)非根管治疗与根管治疗根折牙折裂类型的差异有统计学意义(P<0.001)。非根管治疗牙纵折占比为43.6%,而根管治疗牙纵折占比高达75.6%。4)非根管治疗与根管治疗纵折牙根纵折方向的差异无统计学意义(P=0.58),均以颊舌向为主(86.0%、84.1%)。5)非根管治疗与根管治疗牙横折发生位置的差异无统计学意义(P=0.132),均以根颈1/3区最常见。6)非根管治疗与根管治疗根折折裂线周围骨吸收的差异有统计学意义(P<0.001)。59.0%的非根管治疗根折牙折裂线周围有骨吸收,而根管治疗根折牙中91.8%折裂线周围有骨吸收。结论非根管治疗与根管治疗根折牙在临床和CBCT特征上均存在差异,非根管治疗根折牙更加复杂多变的特征表明复杂的咬合因素在根折发生中所起的作用,而根管治疗根折牙更高的一致性表明其根折发生可能与根管治疗对牙齿的结构改变有关。 展开更多
关键词 根折 后牙 根管治疗 锥形束CT 根折类型
暂未订购
不同生物刺激素类型对辣椒苗期生长及根系形态发育的影响
10
作者 李明洋 周程祥 +6 位作者 王子楷 梁涛 杨怀玉 赵荣芳 张伟 陈新平 王孝忠 《中国土壤与肥料》 北大核心 2026年第2期207-217,共11页
生物刺激素在促进作物生长发育方面具有重要作用,但不同类型及浓度的生物刺激素对辣椒生长的影响尚不明确。为探究不同生物刺激素类型在不同浓度下对辣椒干物质累积量、养分吸收量及根系形态的调控效应,筛选最优生物刺激素类型及其施用... 生物刺激素在促进作物生长发育方面具有重要作用,但不同类型及浓度的生物刺激素对辣椒生长的影响尚不明确。为探究不同生物刺激素类型在不同浓度下对辣椒干物质累积量、养分吸收量及根系形态的调控效应,筛选最优生物刺激素类型及其施用浓度。本研究采用盆栽试验法,以辣椒为供试作物。设置褐藻寡糖、多肽、γ-氨基丁酸及虾青素4种生物刺激素处理,每种刺激素设梯度浓度,以不施生物刺激素为对照,共设5个处理,每处理重复4次。结果表明,与对照相比,4种生物刺激素处理促进了辣椒干物质累积、养分吸收及根系形态的发育(P<0.05),但不同种类和浓度的生物刺激素促进辣椒生长发育的效果差异显著。褐藻寡糖、γ-氨基丁酸、虾青素随着浓度上升,辣椒干物质累积量、养分吸收量、根系形态指标均呈先增加后降低趋势,其最佳浓度分别为20、40、40 mg/kg,然而多肽不同浓度间对辣椒的生长发育差异不显著。与对照相比,最佳浓度下褐藻寡糖、多肽、γ-氨基丁酸与虾青素处理分别显著提高根干物质量55%、36%、51%、65%;提高地上部干重18%、45%、63%、72%;4种生物刺激素均使辣椒养分吸收量提升25%以上,以γ-氨基丁酸与虾青素效果最优;根系形态方面,褐藻寡糖、多肽、γ-氨基丁酸与虾青素分别提高辣椒根总长8%、3%、17%、14%,增加根体积33%、21%、46%、50%。褐藻寡糖、多肽、γ-氨基丁酸与虾青素的施用对辣椒生长均有显著促进作用,其中γ-氨基丁酸与虾青素在最佳浓度的施用下促进效果最显著。该结果为优化辣椒栽培管理及生物刺激素的科学应用提供理论依据。 展开更多
关键词 生物刺激素种类 辣椒 根系形态 养分吸收 Γ-氨基丁酸 虾青素
在线阅读 下载PDF
Expression of gamma-aminobutyric acid type A receptor α_2 subunit in the dorsal root ganglion of rats with sciatic nerve injury 被引量:1
11
作者 Yu Lian Yang Wang +5 位作者 Ketao Ma Lei Zhao Zhongshuang Zhang Yuanyuan Shang Junqiang Si Li Li 《Neural Regeneration Research》 SCIE CAS CSCD 2012年第32期2492-2499,共8页
The γ-aminobutyric acid neurotransmitter in the spinal cord dorsal horn plays an important role in pain modulation through primary afferent-mediated presynaptic inhibition. The weakening of γ-aminobutyric acid-media... The γ-aminobutyric acid neurotransmitter in the spinal cord dorsal horn plays an important role in pain modulation through primary afferent-mediated presynaptic inhibition. The weakening of γ-aminobutyric acid-mediated presynaptic inhibition may be an important cause of neuropathic pain. γ-aminobutyric acid-mediated presynaptic inhibition is related to the current strength of γ-aminobutyric acid A receptor activation. In view of this, the whole-cell patch-clamp technique was used here to record the change in muscimol activated current of dorsal root ganglion neurons in a chronic constriction injury model. Results found that damage in rat dorsal root ganglion neurons following application of muscimol caused concentration-dependent activation of current, and compared with the sham group, its current strength and γ-aminobutyric acid A receptor protein expression decreased. Immunofluorescence revealed that γ-aminobutyric acid type A receptor α2 subunit protein expression decreased and was most obvious at 12 and 15 days after modeling. Our experimental findings confirmed that the y-aminobutyric acid type A receptor α2 subunit in the chronic constriction injury model rat dorsal root ganglion was downregulated, which may be one of the reasons for the reduction of injury in dorsal root ganglion neurons following muscimol-activated currents. 展开更多
关键词 γ-aminobutyric acid γ-aminobutyric acid type A receptor α2 subunit neuropathic pain dorsal root ganglion whole-cell patch clamp IMMUNOFLUORESCENCE primary afferent depolarization paw withdrawal latency MUSCIMOL
在线阅读 下载PDF
“多效穴”探微
12
作者 李杰 王强 文颖娟 《陕西中医药大学学报》 2026年第2期6-10,共5页
近几年腧穴的功效、主治作用及共性机制研究取得重要进展。通过分析四肢部、头面部、躯干部多效穴的主治和功效特点,并从经络理论、神经-内分泌免疫、行正气三方面探讨多效穴具有多类主治功效的作用机制。在临床应用针灸时,应多关注多效... 近几年腧穴的功效、主治作用及共性机制研究取得重要进展。通过分析四肢部、头面部、躯干部多效穴的主治和功效特点,并从经络理论、神经-内分泌免疫、行正气三方面探讨多效穴具有多类主治功效的作用机制。在临床应用针灸时,应多关注多效穴,避免功效相似的多个腧穴重复选用,功效重叠,相互抑制,出现“饱和效应”。 展开更多
关键词 多效穴 单效穴 同效穴 三效穴 根结标本 经脉所过 主治所及
暂未订购
不同根型苜蓿品种光合及叶绿素荧光对钾胁迫的响应
13
作者 任孟雨 南丽丽 +3 位作者 郭佳雨 王利群 田戈 何蓉 《草原与草坪》 2026年第1期71-79,共9页
【目的】探明低钾胁迫对不同根型苜蓿品种光合及叶绿素荧光的影响。【方法】以根蘖型公农4号杂花苜蓿(Medicago varia cv.Gongnong No.4,GN)、直根型陇东紫花苜蓿(Medicago sativa cv.Longdong,LD)和根茎型清水紫花苜蓿(Medicago sativa... 【目的】探明低钾胁迫对不同根型苜蓿品种光合及叶绿素荧光的影响。【方法】以根蘖型公农4号杂花苜蓿(Medicago varia cv.Gongnong No.4,GN)、直根型陇东紫花苜蓿(Medicago sativa cv.Longdong,LD)和根茎型清水紫花苜蓿(Medicago sativa cv.Qingshui,QS)为研究对象,采用营养液砂培法,设置3个浓度钾胁迫处理,即正常施钾(CK,5 mmol/L KNO3)、中度缺钾(M,1 mmol/L KNO3)和严重缺钾(S,0.1 mmol/L KNO3),分析钾胁迫对苜蓿幼苗形态、光合及叶绿素荧光特性的影响。【结果】钾胁迫下,不同根型苜蓿品种的株高、叶长、叶宽、叶面积、K+含量、叶绿素a、叶绿素b、类胡萝卜素、叶绿体色素、蒸腾速率、净光合速率、气孔导度、气孔限制值、PSⅡ潜在光化学效率、最大光化学效率、光化学淬灭系数、实际光化学量子产量和电子传递速率均呈降低趋势。而各根型苜蓿品种的胞间CO_(2)浓度、水分利用效率和非光化学淬灭系数呈升高趋势。其中S处理下,LD的叶绿素a、叶绿体色素、PSⅡ潜在光化学效率、最大光化学效率、电子传递速率、胞间CO_(2)浓度、水分利用效率均大于QS和GN。【结论】直根型苜蓿较根茎型和根蘖型苜蓿表现出更强的低钾胁迫能力。 展开更多
关键词 苜蓿 低钾胁迫 根型 光合作用 叶绿素荧光
在线阅读 下载PDF
2型糖尿病患者抑郁现状及危险因素:一项全国多中心横断面研究
14
作者 廖秋红 陶红 +5 位作者 杨晓辉 袁勇贵 林珊珊 徐微 李玉秀 裴育 《中国全科医学》 北大核心 2026年第12期1558-1565,共8页
背景糖尿病和抑郁成为两大公共卫生挑战,抑郁会影响患者的预后和生活质量,增加自杀及死亡风险。目前糖尿病患者抑郁诊断率和治疗率均低,因此,主动识别筛查具有抑郁风险的2型糖尿病患者,并深入分析各种影响因素,具有重要的临床意义。目的... 背景糖尿病和抑郁成为两大公共卫生挑战,抑郁会影响患者的预后和生活质量,增加自杀及死亡风险。目前糖尿病患者抑郁诊断率和治疗率均低,因此,主动识别筛查具有抑郁风险的2型糖尿病患者,并深入分析各种影响因素,具有重要的临床意义。目的 探讨中国2型糖尿病患者抑郁患病率及其影响因素,为制订糖尿病患者精神心理健康干预策略提供依据。方法 采用概率与规模成比例(PPS)抽样方法,于2022年5月—2023年12月在全国52家综合医院招募了18~75岁的门诊及住院的2型糖尿病患者为研究对象。使用抑郁症状自评量表(PHQ-9)评估抑郁(以PHQ-9≥10分为临床抑郁)。通过查阅文献确定空腹血糖、餐后2 h血糖、糖化血红蛋白、血脂四项、三酰甘油-葡萄糖指数(TyG)、糖尿病病程、糖尿病并发症及合并症等共29个影响因素。采用多因素Logistic回归分析2型糖尿病患者抑郁的影响因素。采用限制性立方样条回归分析年龄、TyG与抑郁剂量-反应关系并计算拐点。结果 在1 659例2型糖尿病患者中,抑郁患病率为13.3%(220例)。多因素Logistic回归分析显示,2型糖尿病患者发生抑郁的独立危险因素为性别(女性:OR=1.815,95%CI=1.220~2.701)、年龄(OR=0.969,95%CI=0.952~0.987)、受教育水平(高中以下:OR=1.488,95%CI=1.049~2.110)、婚姻(未婚及其他:OR=1.864,95%CI=1.068~3.254)、BMI(OR=0.936,95%CI=0.896~0.977)、经济困难(OR=3.654,95%CI=2.403~5.558)、糖尿病病程(OR=1.031,95%CI=1.006~1.057)、糖尿病周围神经病变(OR=2.170,95%CI=1.275~3.693)、心血管疾病(OR=1.844,95%CI=1.248~2.723)、高血压(OR=1.625,95%CI=1.163~2.271)、TyG(OR=1.717,95%CI=1.026~2.874)(P<0.05)。在控制全部混杂因素后,TyG与抑郁呈线性正相关(P_(非线性)=0.191),男性人群的年龄与抑郁呈线性负相关(P_(非线性)=0.946)。女性人群的年龄与抑郁呈非线性关系(P_(非线性)=0.013),与抑郁关系的时间拐点为49岁(年龄<49岁时OR=0.921,95%CI=0.857~0.990,P_(非线性)=0.025;年龄≥49岁时OR=1.036,95%CI=1.003~1.070,P_(非线性)=0.032)。结论 中国2型糖尿病患者抑郁患病率为13.3%,高TyG、低教育水平、未婚及离异、经济困难、合并糖尿病周围神经病变、心血管疾病和高血压的患者更易发生抑郁。男性患者随着年龄增加,抑郁患病率降低。女性患者年龄与糖尿病抑郁发病率呈非线性关系,49岁后抑郁风险升高。建议针对这些高危人群进行早期抑郁筛查和干预,以改善2型糖尿病患者的整体健康状况和生活质量。 展开更多
关键词 糖尿病 2型 抑郁 影响因素分析 三酰甘油-葡萄糖指数 多中心研究
暂未订购
黄土丘陵沟壑区切沟形态特征对典型草本根系类型与密度的响应
15
作者 王健衡 李成奥 +1 位作者 杨扬 刘瑛娜 《水土保持学报》 北大核心 2026年第2期264-274,共11页
[目的]研究草本根系类型与密度对切沟侵蚀的定量影响,对于深入理解植物根系调控切沟侵蚀的作用机理具有重要意义。[方法]选取黄土丘陵沟壑区典型坡面,种植直根系(紫花苜蓿)和须根系(无芒雀麦)草本植物,通过设置不同种植行距模拟根系密... [目的]研究草本根系类型与密度对切沟侵蚀的定量影响,对于深入理解植物根系调控切沟侵蚀的作用机理具有重要意义。[方法]选取黄土丘陵沟壑区典型坡面,种植直根系(紫花苜蓿)和须根系(无芒雀麦)草本植物,通过设置不同种植行距模拟根系密度梯度,以裸地为对照,开展野外放水冲刷试验,利用运动恢复结构摄影测量法获取试验前、后的地表DEM,分析根系类型与密度对切沟侵蚀及切沟主要形态参数的影响。[结果]1)在同一种植行距条件下,相比直根系处理,须根系处理的切沟规模明显较小,其切沟周长、面积和体积仅分别为前者的28%、13%和6%,沟道形态较复杂、破碎。2)除周长和宽深比外,各切沟形态参数均与根重密度显著相关(p<0.05)。随着根重密度的增大,切沟长度、最大表面宽度、最大和平均深度线性减小,减小速率为0.40~9.35 m^(2)/kg;切沟平均表面宽度、面积和体积呈指数下降趋势,对应的指数系数分别为-1.83、-3.76和-5.48;切沟周长-面积比呈指数上升趋势,指数系数为2.04;切沟宽深比则呈先增后减趋势,在根重密度0.23 kg/m^(3)时达到最大。[结论]提高草本植物尤其是须根系植物的根系密度,可有效遏制切沟扩张。研究结果可为黄土丘陵沟壑区的切沟侵蚀防控提供科学依据。 展开更多
关键词 切沟侵蚀 根系类型 根系密度 切沟形态特征 野外原位冲刷试验 黄土丘陵沟壑区
在线阅读 下载PDF
大学生基层就业项目:选拔了谁?可培养谁?
16
作者 熊艳青 汪卫平 王乐婷 《当代教育论坛》 北大核心 2026年第2期38-47,共10页
培养和选拔出真正有意愿、有能力的人才前往基层是缓解基层人才流失的有效途径之一,然而鲜有实证研究关注政策预期目标群体特征,以及“Z世代”基层就业意向人群与目标群体的差距。研究基于全国25所高校学生调查数据及182份基层就业项目... 培养和选拔出真正有意愿、有能力的人才前往基层是缓解基层人才流失的有效途径之一,然而鲜有实证研究关注政策预期目标群体特征,以及“Z世代”基层就业意向人群与目标群体的差距。研究基于全国25所高校学生调查数据及182份基层就业项目招募方案发现:当前基层项目人才选拔标准并无明显瑕疵,但选拔程序遵循“可见能力优先考量”原则,极易选拔出能力强但基层服务意愿不高的学生。类型分析视角下,有意向在基层就业的学生可分为四类:持续扎根型(占比25.93%)、短期过客型(占比20.37%)、骑驴找马型(占比38.64%)以及犹豫徘徊型(占比15.06%)。其中,前两类更接近政策预期目标群体,但二者的基层就业准备度与非认知能力仍有待加强。预测潜在理想型基层就业人群时,“情怀”比“能力”更有价值。 展开更多
关键词 “Z世代” 基层就业 意愿类型 选拔方案 预测效应
在线阅读 下载PDF
不同氮效率类型紫花苜蓿生长特性及根系特征差异研究
17
作者 何升然 刘晓静 +1 位作者 王静 董霖 《草原与草坪》 2026年第1期157-163,共7页
【目的】探究不同氮效率类型紫花苜蓿生长特性及根系特征的差异。【方法】以氮高效类型紫花苜蓿品种LW6010和甘农5号、氮低效类型紫花苜蓿品种陇东苜蓿和金皇后为试验材料,探究不同氮效率类型紫花苜蓿在不施氮和施氮103.5 kg/hm^(2)(纯... 【目的】探究不同氮效率类型紫花苜蓿生长特性及根系特征的差异。【方法】以氮高效类型紫花苜蓿品种LW6010和甘农5号、氮低效类型紫花苜蓿品种陇东苜蓿和金皇后为试验材料,探究不同氮效率类型紫花苜蓿在不施氮和施氮103.5 kg/hm^(2)(纯氮)处理下的生长特性与根系特征。【结果】在施氮处理下,氮高效类型紫花苜蓿品种LW6010和甘农5号的株高、叶面积、分枝数、地上生物量、主根长和根体积均显著高于氮低效类型陇东苜蓿和金皇后(P<0.05);在不施氮处理下,氮高效类型紫花苜蓿品种LW6010和甘农5号的叶面积、地上生物量、根体积和根表面积均显著高于氮低效类型陇东苜蓿和金皇后(P<0.05)。施氮后2种氮效率类型紫花苜蓿的地上生物量、株高、叶面积、分枝数、根体积、根表面积和根平均直径均提升,其中根平均直径显著提升(P<0.05)。相关性分析表明,紫花苜蓿地上生物量与主根长呈显著正相关(P<0.05),与根体积、根表面积和根平均直径呈极显著正相关(P<0.01)。【结论】氮高效类型紫花苜蓿品种的生长特性和根系特征均优于氮低效类型紫花苜蓿,施氮对紫花苜蓿的生长发育具有促进作用,且良好的根系特征是紫花苜蓿实现高产的基础。 展开更多
关键词 紫花苜蓿 氮效率 生长特性 根系特征
在线阅读 下载PDF
莲藕山药粗提液对链脲菌素诱导的二型糖尿病小鼠的干预作用
18
作者 史泽夫 黄晓君 +3 位作者 杨辰涵 李甲 闫骄阳 聂少平 《食品研究与开发》 2026年第3期68-75,共8页
基于食药同源相关古籍与现代食品科学,将记录中具有一定缓解消渴症同时具有降糖功效潜力的食物原料莲藕与山药按照一定比例制备为粗提液,并进行功效验证。基于链脲菌素(streptozotocin,STZ)诱导的二型糖尿病小鼠模型实验,通过空腹血糖... 基于食药同源相关古籍与现代食品科学,将记录中具有一定缓解消渴症同时具有降糖功效潜力的食物原料莲藕与山药按照一定比例制备为粗提液,并进行功效验证。基于链脲菌素(streptozotocin,STZ)诱导的二型糖尿病小鼠模型实验,通过空腹血糖、胰岛素抵抗和敏感水平、肝脏损伤等主要病理指标验证其干预功效。结果显示,粗提液能显著缓解STZ诱导的二型糖尿病小鼠的空腹血糖升高(P<0.01)、胰岛素抵抗指数(P<0.01)、葡萄糖耐量(P<0.05)等指标。综上,莲藕山药粗提液对STZ诱导下小鼠二型糖尿病有一定的干预作用。 展开更多
关键词 食药同源 食品 二型糖尿病 莲藕 山药
在线阅读 下载PDF
郑氏“颈四步”手法联合穴位埋线治疗对神经根型颈椎病的疗效
19
作者 王新宇 王俊华 +4 位作者 陈从山 张远洋 李明辉 黄钰滢 方兴刚 《检验医学与临床》 2026年第5期634-639,共6页
目的探讨郑氏“颈四步”手法联合穴位埋线治疗对神经根型颈椎病(CSR)的疗效。方法选取2021年6月至2023年12月在该院接受诊治的120例CSR患者作为研究对象,采用随机数字表法将所有研究对象分为联合组和穴位埋线组,每组60例。穴位埋线组采... 目的探讨郑氏“颈四步”手法联合穴位埋线治疗对神经根型颈椎病(CSR)的疗效。方法选取2021年6月至2023年12月在该院接受诊治的120例CSR患者作为研究对象,采用随机数字表法将所有研究对象分为联合组和穴位埋线组,每组60例。穴位埋线组采用穴位埋线方案治疗,联合组在穴位埋线组治疗基础上联合郑氏“颈四步”手法治疗。比较2组临床疗效、中医证候积分、疼痛情况、颈椎活动度、实验室指标[前列腺素E2(PGE2)、白细胞介素-8(IL-8)与C反应蛋白(CRP)]水平、生活质量及治疗期间患者不良反应发生情况。结果治疗后,联合组总有效率为91.67%,高于穴位埋线组的75.00%,差异有统计学意义(P<0.05)。治疗后,2组颈肩部疼痛、活动受限、颈部压痛、上肢疼痛麻木证候积分、日常生活能力量表(ADL)评分、视觉模拟评分法(VAS)评分,以及PGE2、IL-8、CRP水平均低于治疗前,前倾角度、后屈角度、左转角度、右转角度均大于治疗前,且联合组颈肩部疼痛、活动受限、颈部压痛、上肢疼痛麻木中医证候积分、ADL评分、VAS评分,以及PGE2、IL-8、CRP水平均低于穴位埋线组,前倾角度、后屈角度、左转角度、右转角度均大于穴位埋线组,差异均有统计学意义(P<0.05)。2组治疗期间局部疼痛、头晕、皮疹、红肿不良反应总发生率比较,差异无统计学意义(P>0.05)。结论郑氏“颈四步”手法联合穴位埋线治疗可有效减轻CSR患者机体炎症反应,改善患者颈椎活动度,疗效较为理想,值得临床推广应用。 展开更多
关键词 颈椎病 神经根型 穴位埋线 推拿手法 中医证候积分 郑氏“颈四步”手法
暂未订购
蒙古族与汉族人群下颌第一前磨牙根管分型的CBCT研究
20
作者 王俊艳 王宾 陈丽春 《牙体牙髓牙周病学杂志》 2026年第2期96-100,共5页
目的 采用锥形束计算机断层扫描(CBCT)技术,对比分析蒙古族与汉族人群下颌第一前磨牙的牙根形态学特征、Vertucci根管分型及其与颏孔的解剖位置关系。方法 回顾性收集2023年1月—12月于内蒙古自治区人民医院口腔医院因其他牙齿疾病需行C... 目的 采用锥形束计算机断层扫描(CBCT)技术,对比分析蒙古族与汉族人群下颌第一前磨牙的牙根形态学特征、Vertucci根管分型及其与颏孔的解剖位置关系。方法 回顾性收集2023年1月—12月于内蒙古自治区人民医院口腔医院因其他牙齿疾病需行CBCT检查的蒙古族与汉族人的资料各50例。在三维重建图像上观察记录牙根数目(单根/双根/融合根)、根管分型(Vertucci分类)以及矢状位上根尖至颏孔的垂直距离。采用χ^(2)检验比较牙根形态及根管分型的民族差异,独立样本t检验分析根尖-颏孔距离的民族差异,Pearson相关分析评估牙位与颏孔的位置相关性。结果 牙根形态方面,蒙古族人群单根牙80%、双根牙16%、融合根4%;汉族人群分别为90%、4%、6%,组间差异无统计学意义(χ^(2)=4.094,P=0.129)。根管分型方面,蒙古族人群以Ⅰ型(54%)、V型(18%)、Ⅳ型(16%)为主,汉族人群以Ⅰ型(40%)为主,民族间分布差异显著(χ^(2)=14.23,P=0.007)。与颏孔位置关系:下颌第一前磨牙根尖至颏孔距离的民族差异有统计学意义(P<0.05)。蒙古族人群下颌第一前磨牙根尖距颏孔距离较汉族远(6.112±1.971) mm vs(5.471±1.066) mm,(t=2.002,P=0.049)。结论 蒙古族与汉族人群下颌第一前磨牙的根管系统存在显著民族差异,且牙根与颏孔的解剖关系因民族而异。临床行根管治疗或根尖手术时需结合民族解剖特征进行个性化评估。 展开更多
关键词 下颌第一前磨牙 根管分型 CBCT 颏孔
暂未订购
上一页 1 2 59 下一页 到第
使用帮助 返回顶部