50个MACGEMS珍宝

最新实用的免费与低价软件大回顾 面对网络上众多新发布的苹果软件．想挑出其中最有价值的似乎并不容易．我们帮您精选了50个这样的珍宝，它们都很实用，并且是免费或考便宜的共享软件．可能您与它们曾在网上擦肩而过，不妨回来看看。如果它们打动你的心．只要上网点击鼠标就可轻松获得。

Use of the Scar Acceleration Method/Método de Aceleração Cicatricial—MAC®—in the Treatment of Capsular Contracture: Case Report

Capsular contracture is a frequent complication in the postoperative period of breast implantation. It usually accompanies the appearance of a firm breast that can progress to pain, distortion, and asymmetry of the breasts, requiring surgical revision. The present study is a case report. A 58-year-old woman with a medical diagnosis of capsular contracture of the right breast evidenced by ultrasound. She was referred to the physiotherapy clinic in October 2019 with an initial complaint of pain on palpation, swelling, and stiffness in her right breast. The patient was evaluated and the MACò method was used to treat capsular contracture. For this, 12 sessions of photodynamic therapy were carried out. The treatment included the use of LED by doping: red (300 s), violet (60 s) and blue (120 s), with the use of 1% methylene blue in target areas, three times a week. The patient had the beginning of symptoms’ remission in the fourth visit and total remission in the 12th visit. It was concluded that the use of photodynamic therapy using the MACò method showed improvement in signs and symptoms—the sensation of prosthesis stiffness in the lower and medial region, local temperature, and pain in the right breast. The patient was followed up after treatment and currently, she has no complaints. There was also no need for surgical intervention. In the present case report, the MACò method proved to be effective. Further research is suggested with a cohort of patients with capsular contracture, with randomization and evaluation of a larger number of patients with the referred method.

Existence and numerical approximation of a solution to frictional contact problem for electro-elastic materials

In this paper,a frictional contact problem between an electro-elastic body and an electrically conductive foundation is studied.The contact is modeled by normal compliance with finite penetration and a version of Coulomb’s law of dry friction in which the coefficient of friction depends on the slip.In addition,the effects of the electrical conductivity of the foundation are taken into account.This model leads to a coupled system of the quasi-variational inequality of the elliptic type for the displacement and the nonlinear variational equation for the electric potential.The existence of a weak solution is proved by using an abstract result for elliptic variational inequalities and a fixed point argument.Then,a finite element approximation of the problem is presented.Under some regularity conditions,an optimal order error estimate of the approximate solution is derived.Finally,a successive iteration technique is used to solve the problem numerically and a convergence result is established.

Summer Atmospheric Water Cycle under the Transition Influence of the Westerly and Summer Monsoon over the Yarlung Zangbo River Basin in the Southern Tibetan Plateau

This study compares the summer atmospheric water cycle,including moisture sources and consumption,in the upstream,midstream,and downstream regions of the Yarlung Zangbo River Basin in the southern Tibetan Plateau.The evolutions of moisture properties under the influence of the westerly and summer southerly monsoon are examined using 5-yr multi-source measurements and ERA5 reanalysis data.Note that moisture consumption in this study is associated with clouds,precipitation,and diabatic heating.Compared to the midstream and downstream regions,the upstream region has less moisture,clouds,and precipitation,where the moisture is brought by the westerly.In early August,the vertical wet advection over this region becomes enhanced and generates more high clouds and precipitation.The midstream region has moisture carried by the westerly in June and by the southerly monsoon from July to August.The higher vertical wet advection maximum here forms more high clouds,with a precipitation peak in early July.The downstream region is mainly affected by the southerly-driven wet advection.The rich moisture and strong vertical wet advection here produce the most clouds and precipitation among the three regions,with a precipitation peak in late June.The height of the maximum moisture condensation is different between the midstream region(325 hPa)and the other two regions(375 hPa),due to the higher upward motion maximum in the midstream region.The diabatic heating structures show that stratiform clouds dominate the upstream region,stratiform clouds and deep convection co-exist in the midstream region,and deep convection systems characterize the downstream region.

桥涵积水深度预测的PSO-SVR模型

城市内涝是一种重要的城市灾害,而桥涵积水是城市内涝的主要表现形式之一,容易造成严重的生命伤亡和财产损失。为了提高桥涵积水深度预测的效率和精度,以当前的气象数据作为输入向量,输出向量是积水深度数据,提出一种桥涵积水深度预测模型PSO-SVR。首先利用SVR建立积水深度预测模型,再采用PSO对关键参数进行寻优,具有客观性和简易性的优点。实验结果表明,PSO-SVR模型在桥涵积水深度预测中是有效的,与传统SVR和BP神经网络预测模型相比,PSO-SVR模型对积水深度具有更高的拟合精度。该模型可以为城市内涝预警和应急救援决策提供技术支持。

风景园林中的人地关系——国际风景园林师联合会主席布鲁诺·马奎斯博士专访

布鲁诺·马奎斯(Bruno Marques)博士于2022年9月至今担任国际风景园林师联合会(International Federation of Landscape Architects,IFLA)主席,惠灵顿维多利亚大学(Victoria University of Wellington)建筑与设计创新学院副院长。他重点关注社区的健康福祉、毛利部落、康复景观以及社区参与式风景园林设计的方法与实践。

Characterization of Gold Bearing Placers and Associated Minerals in the Elogo Region (North-West Congo Republic)

The Elogo region has been subjected to craft industry and semi-industrial mining for gold-bearing placers, since the colonial times. It is actually undergoing an intensive exploration for a primary gold deposit. The goal of this study is to contribute to the exploration of the primary gold deposit in the Elogo Region (North-West of Congo Republic). The methodology consisted of characterization of placers deposits by their lithology, mineralogy and the gold grains shape, in order to constrain the source of gold with the respect to the local geology. The results obtained show that alluviums are polygenic and yields seventeen mineral species composed of zircon, olivine, magnetite, ilmenite, gold, garnet, rutile, coltan, cassiterite, monazite, apatite, amphibole, tourmaline, pyrite, limonite, chromite, and amphibole. The morphoscopy of gold grain shows single grains and grains with quartz inclusions that suggest their relationship with quartz veins. The gold grains are flattened, sub-flattened, and rounded. The northern region of Elogo characterized by a dominance of coarser quartz-included gold grains indicates a proximal proparte origin (less than 50 m), while the southern region, showing less coarse and more evolved grains with choc marks, appears to be associated with a distal pro-parte origin (more than 300 m). The multivariate statistical analysis shows seven classes of samples corresponding to the mineralogical paragenesis suggesting various sources, consisting of high-grade metamorphic, granitoids, pegmatites, basic and ultrabasic rocks, and BIFs that provided minerals to the placers. Gold mainly comes from hydrothermal quartz veins and probably from the peptization of gold from the weathering of sulfides occurring in the BIF. In the Elogo region, gold exploration for primary deposits should look for and follow the hydrothermal system developed in this region. Chemical analysis for the gold grains and associated minerals is necessary to better guide the proposed geochemical prospecting.

荧光光度法测定雨水中的H_2O_2含量

研究了在pH4.48的HAc-NaAc缓冲溶液中,邻苯二胺(OPDA)与过氧化氢反应生成新物质2,3-二氨基吩嗪(DAPN)的荧光光谱变化,通过跟踪DAPN的荧光强度建立了过氧化氢测定的新方法,该方法由于采用二元体系,实验操作简单,灵敏度较高。实验结果表明,过氧化氢含量在9.0×10-7～3.6×10-5mol.L-1范围内与荧光强度的变化呈良好的线性关系,线性方程为:F=1.15c(μmol.L-1)+398.6,相关系数r=0.9991,最低检出限为2.7×10-7mol.L-1(3Ds/斜率,n=11)。对含量为7.5×10-6mol.L-1和3.0×10-5mol.L-1的H2O2的标准溶液进行了11次平行测定,其相对标准偏差分别为2.2%和1.0%。考察了多种共存离子的影响。该方法用于雨水中微量H2O2的测定,测定结果令人满意。

高效降解苯酚和苯胺菌株的选育

从污水中通过选择性富集和驯化培养,分离得到两株分别以苯酚、苯胺为惟一碳源的菌株.经初步鉴定这两种菌株均为假单胞杆菌属(Pseudomonas sp.).通过对两菌株在不同温度、pH值以及相应苯酚、苯胺底物浓度下的生长和降解情况的研究,确定了最佳降解苯酚、苯胺的工艺条件为pH 7.0,温度30℃,好氧.当苯酚、苯胺底物浓度不超过1 000 mg/L时,两菌株对其去除率可达到95%以上.

亲水作用色谱及其在碱性药物分析中的应用

亲水作用色谱是采用极性固定相、高含量极性有机溶剂-水相缓冲液为流动相的一种分离技术,它能有效地保留反相色谱中保留弱或不保留的强极性碱性药物。本文综述了以未键合硅胶为固定相的亲水作用色谱分离碱性药物的机理、特点及其应用的最新进展。

加拿大石油出口市场和管线新动向

加拿大油砂产量快速增长,而相应的管输能力没有成长起来,2011～2012年加拿大原油大幅折价,给政府和石油生产商带来严重损失。未来加拿大西部油砂产量要实现进一步增加,必须加快加拿大石油出口管线的建设,突破原有市场格局,利用扩/新建的管线将其导向新市场,以便增加收益。文章分析了已公布的管道项目,认为加拿大国内自西向东的输油管线最有可能率先完工;通往西海岸的管线中,扩建的管线项目遇到的阻力小;南下至美国的管线前途未定。管线项目推进过程中,原住民问题、环境问题、省际协调问题是必须协调好的关键问题。

水体微囊藻毒素的消减研究进展

目前水体富营养化问题日益严重,富营养化水体中一些藻类产生的微囊藻毒素(Micro-cystins,MCs)对人类健康产生了极大威胁,而常规的水处理方法难以将其彻底去除.因此,研究出绿色无毒、具有实际应用价值的高效降解MCs的新方法具有重要意义.本文综述了微囊藻毒素处理的方法技术,着重阐述了高级氧化技术(AOPs),包括TiO2光催化、Fenton光催化氧化法对微囊藻毒素的降解原理与应用.引用文献53篇.

充装压力对全氟己酮抑制油类火焰的影响

设计和搭建了全氟己酮灭火剂抑制B类火焰效应实验系统和过火尾气采集装置,以此研究了灭火瓶充装压力对灭火过程中瓶内压力、喷嘴处压力、灭火剂输出流量、灭火时间和过火尾气组成的影响,采用离子色谱法测试尾气中HF含量,用气质联用法分析尾气的其它气体组分。结果表明,充装压力从1.5 MPa增加至4.2 MPa时,灭火剂喷射流量逐渐增大。充装压力在1.5~2.5 MPa时,喷射流量增幅约为30%,在2.5~4.2 MPa,喷射流量增幅约5%;随着充装压力的增加,过火尾气中氟化氢含量逐渐减少,降幅约40%。过火尾气中还含有六氟丙烯、七氟丙烷、全氟丙烷及全氟庚烷等含氟气体。

Gems from traditional north-African medicine: medicinal and aromatic plants from Sudan

Sudanese folk medicine represents a unique blend of indigenous cultures with Islamic,Arabic and African traditions.In addition,Sudan encompasses different terrains and climatic zones,ranging from desert and semi-desert in the north to equatorial with a short rainy season(semi-aridand semi-humid)in the centre to equatorial with a long rainy season(arid-humid and equatorial-humid)in the south.This variation contributes to the immense diversity of vegetation in the region.The flora of Sudan consists of 3137 species of flowering plants belonging to 170 families and 1280 genera.It is estimated that 15%of these plants are endemic to Sudan.The intersection of diverse cultures and the unique geography holds great potential for Sudanese herbal medicine.Medicinal and aromatic plants and their derivatives represent an integral part of life in Sudan.Indigenous remedies are the only form of therapy available to the majority of poor people.It has been estimated that only 11%of the population has access to formal health care.Therefore,research on the desired pharmacological effects and possible unwanted side effects or toxicity is required to improve efficacy and safety of Sudanese herbal medicine.In the future,it would be preferable to promote the use of traditional herbal remedies by conversion of raw plant material into more sophisticated products instead of completely replacing the traditional remedies with synthetic products from industrialized countries.The present review gives an overview of traditional Sudanese medicinal and aromatic herbs and their habitats,traditional uses,and phytochemical constituents.

扭转颤振复合挤压数值模拟

分析了铜壳零件加工工艺,拟定了加工方案。以反挤压工序为例,提出了一种新的扭转颤振复合挤压方法。基于有限元分析软件Deform-3D分别建立了传统挤压、轴向振动辅助挤压以及扭转颤振复合挤压有限元模型。分析了不同加载方式下,冲头旋转挤压速度、凹模振动速度与成形载荷的关系,探讨了镦粗区、环形区和挤压筒区的金属流动规律和速度分布,应变变化规律和应变分布。结果表明:与传统挤压相比,轴向振动辅助挤压和扭转颤振复合挤压能降低平均成形载荷,且成形载荷呈振荡式变化,振荡频率与施振频率相同;扭转颤振复合挤压的最大成形载荷较轴向振动辅助挤压降低约10%。扭转颤振复合挤压的金属流动速度最快,速度间断线位于镦粗区和环形区中部,环形区金属流转角最小,金属流动更顺畅、平稳,可以有效减少折叠和空洞等缺陷,提高成形件性能。扭转颤振复合挤压变形死区范围最小,过渡区范围最大;在成形后期,变形死区消失,镦粗区和环形区应变分布趋向均匀。

Reduction of the ages at diagnosis and operation of biliary atresia in Taiwan: A 15-year population-based cohort study

AIM: To describe the ages at diagnosis and operation of biliary atresia(BA) and its incidence over a 15-year period in Taiwan.METHODS: This was a population-based cohort study. BA cases were identified from the Taiwan National Health Insurance Research Database based on the International Classification of Diseases,Ninth Revision(ICD-9) code of BA 751.61 plus Kasai operation(ICD-9 procedure code 51.37) or liver transplantation(LT,ICD-9 procedure code 50.5). The patients' characteristics including sex,age at diagnosis,age at receiving Kasai operation and age at receiving LT were compared among three birth cohorts:(1) 1997 to 2001;(2) 2002 to 2006; and(3) 2007 to 2011.RESULTS: There were a total of 540 BA cases(275 females) with an incidence of 1.62 per 10000 live births. No seasonality of BA was noted. The mean ages at diagnosis of three cohorts were 57.9,55.6 and 52.6 d.A linear regression model demonstrated a decreasing trend of the mean age at diagnosis(1.27 d per year). The proportion of BA cases that received the Kasai operation within 60 d of age increased from 76% to 81%. A total of 189(35%) BA patients underwent LT. The mean age at LT was reduced from 3-year-old to 1-year-old. The rates of LT were 25.6% and 32.3% in patients who received the Kasai operation within 60 d or after 60 d of age,respectively. All patients who did not undergo a Kasai operation eventually required LT.CONCLUSION: The ages at diagnosis and operation in BA cases have decreased over time. Kasai operation performed at younger age reduces the need for LT. The incidence of BA in Taiwan fluctuates,but without certain trend.

苗期重金属胁迫下蓖麻生长、生理和重金属积累效应

农业面源和重金属污染日益加剧,严重威胁农业生态环境与人类健康。探究作物对重金属的累积效应及生理机制对重金属污染的治理意义重大。本文以淄蓖5号为材料,研究重金属处理下(Cu、Zn、Cd,处理浓度分别为0、30、60、120 mg L^-1)蓖麻幼苗对各重金属的积累效应及相关生理机制,为重金属污染土壤的修复与防治奠定基础。重金属处理显著影响蓖麻植株的生长、生理及对重金属的积累。随着重金属浓度的增加,株高先增后降,在60 mg L^-1时达最大值;根长、鲜重、干重显著降低。叶片中SOD活性先降后增,在10 DAS(播种后天数)120 mg L^-1 Cu和Zn处理下活性最高,分别增加了45.5%和31.8%;POD活性在10 DAS先降后增,而在25 DAS和45 DAS显著增加,且POD活性随生长进程的推进增加显著。可溶性蛋白含量仅在120 mg L^-1 Cu处理下显著增加,分别增加了18.8%、66.7%和83.3%。MDA含量随着处理浓度的增加显著增加,随生育进程的推进而显著降低,且Cd处理下的MDA含量显著高于Cu和Zn处理。蓖麻植株对Cu、Zn、Cd的积累量随处理浓度的增加而递增,在120 mg L^-1浓度下积累量最大,其中对Zn的积累量最高,Cd次之,各器官对重金属的积累量表现为根>茎>叶。表明蓖麻对重金属具有一定的耐受性,蓖麻植株主要通过提高抗氧化酶活性缓解重金属胁迫;蓖麻对不同重金属的积累具有器官特异性;种植蓖麻可作为修复Cu、Zn、Cd等重金属污染土壤的有效途径之一。

低碳建筑的未来

建筑环境在很多发达国家引起的国家温室气体排放量已高达50%。因此,各国政府正寻求适当的对策解决气候变化所带来的威胁。建筑环境显然需要担当一个重要的角色。需要强而有力的政府领导,确保提供长期经济规划、商业投资、法规和激励机制,以确保业界迅速响应。本文讨论了英国政府的零碳建筑物策略对低能耗建筑设计的影响及产生的意外的后果。作者强调不同行业利益相关者和政府之间应有的对话和合作,以制定政策架构,鼓励业界积极创新,以提供符合成本效益的解决方案,真正应对气候变化所带来的挑战。

中国传统价值观对于消费行为影响研究——以上海手机市场为例(英文)

This study investigates how traditional Chinese values influence Chinese consumer behavior directly and indirectly through the impact on people's lifestyles and perceived values.The empirical research is conducted in the context of the mobile phone market in Shanghai.The study establishes measurement scales of Confucian value,lifestyle,and customer perceived value for Chinese market.Relationships of multiple factors are tested in the structural equation model and their impacts on consumer behavior are elaborated.Findings indicate that Confucian values not only have a direct impact on Chinese consumer behavior but also indirectly influence this behavior through impacting people's lifestyles and perceived values.

Neuroinflammation and oxidative stress act in concert to promote neurodegeneration in the diabetic retina and optic nerve:galectin-3 participation

Diabetes is a lifelong disease characterized by glucose metabolic imbalance,in which low insulin levels or impaired insulin signaling lead to hyperglycemic state.Within 20 years of diabetes progression,95%of patients will have diabetic retinopathy,the leading cause of visual defects in working-age people worldwide.Although diabetes is considered a microvascular disease,recent studies have shown that neurodegeneration precedes vascular changes within the diabetic visual system,albeit its mechanisms are still under investigation.Neuroinflammation and oxidative stress are intrinsically related phenomena,since macrophage/microglia and astrocytes are the main sources of reactive oxygen species during central nervous system chronic degenerative diseases,and both pathological processes are increased in the visual system during diabetes.The present review will focus on recent findings of the contribution of oxidative stress derived from neuroinflammation in the early neurodegenerative aspects of the diabetic visual system and their relationship with galectin-3.