Multi-functional photonic spin Hall effect sensor controlled by phase transition

Photonic spin Hall effect(PSHE), as a novel physical effect in light–matter interaction, provides an effective metrological method for characterizing the tiny variation in refractive index(RI). In this work, we propose a multi-functional PSHE sensor based on VO_(2), a material that can reveal the phase transition behavior. By applying thermal control, the mutual transformation into different phase states of VO_(2) can be realized, which contributes to the flexible switching between multiple RI sensing tasks. When VO_(2) is insulating, the ultrasensitive detection of glucose concentrations in human blood is achieved. When VO_(2) is in a mixed phase, the structure can be designed to distinguish between the normal cells and cancer cells through no-label and real-time monitoring. When VO_(2) is metallic, the proposed PSHE sensor can act as an RI indicator for gas analytes. Compared with other multi-functional sensing devices with the complex structures, our design consists of only one analyte and two VO_(2) layers, which is very simple and elegant. Therefore, the proposed VO_(2)-based PSHE sensor has outstanding advantages such as small size, high sensitivity, no-label, and real-time detection, providing a new approach for investigating tunable multi-functional sensors.

Design of Drilling and Riveting Multi-functional End Effector for CFRP and Aluminum Components in Robotic Aircraft Assembly

To fulfill the demands for higher quality,efficiency and flexibility in aviation industry,a multi-functional end effector is designed to automate the drilling and riveting processes in assembling carbon fiber reinforced polymer(CFRP)and aluminum components for a robotic aircraft assembly system.To meet the specific functional requirements for blind rivet installation on CFRP and aluminum materials,additional modules are incorporated on the end effector aside of the basic processing modules for drilling.And all of these processing modules allow for a onestep-drilling-countersinking process,hole inspection,automatic rivet feed,rivet geometry check,sealant application,rivet insertion and installation.Besides,to guarantee the better quality of the hole drilled and joints riveted,several online detection and adjustment measures are applied to this end effector,including the reference detection and perpendicular calibration,which could effectively ensure the positioning precision and perpendicular accuracy as demanded.Finally,the test result shows that this end effector is capable of producing each hole to a positioning precision within ±0.5 mm,aperpendicular accuracy within 0.3°,a diameter tolerance of H8,and a countersink depth tolerance of±0.01 mm.Moreover,it could drill and rivet up to three joints per minute,with acceptable shearing and tensile strength.

Development of a novel multi-functional integrated bioconjugate effectively targeting K-Ras mutant pancreatic cancer

Folate receptor(FR)overexpression occurs in a variety of cancers,including pancreatic cancer.In addition,enhanced macropinocytosis exists in K-Ras mutant pancreatic cancer.Furthermore,the occurrence of intensive desmoplasia causes a hypoxic microenvironment in pancreatic cancer.In this study,a novel FR-directed,macropinocytosis-enhanced,and highly cytotoxic bioconjugate folate(F)-human serum albumin(HSA)-apoprotein of lidamycin(LDP)-active enediyne(AE)derived from lidamycin was designed and prepared.F-HSA-LDP-AE consisted of four moieties:F,HSA,LDP,and AE.F-HSA-LDP presented high binding efficiency with the FR and pancreatic cancer cells.Its uptake in wild-type cells was more extensive than in K-Ras mutant-type cells.By in vivo optical imaging,F-HSA-LDP displayed prominent tumor-specific biodistribution in pancreatic cancer xenograft-bearing mice,showing clear and lasting tumor localization for 360 h.In the MTT assay,F-HSA-LDP-AE demonstrated potent cytotoxicity in three types of pancreatic cancer cell lines.It also induced apoptosis and caused G2/M cell cycle arrest.F-HSALDP-AE markedly suppressed the tumor growth of AsPc-1 pancreatic cancer xenografts in athymic mice.At well-tolerated doses of 0.5 and 1 mg/kg,(i.v.,twice),the inhibition rates were 91.2%and 94.8%,respectively(P<0.01).The results of this study indicate that the F-HSA-LDP multi-functional bioconjugate might be effective for treating K-Ras mutant pancreatic cancer.

A design and application of compound multi-functional sensor in wood-based panel processing

A compound multi-functional sensor was designed by the study on the on-line testing technology of wood-based panels, and its properties of shape, functions, size, resistance to special environment were studied in details. The operational principles of different sensors, technical flow of manufacturing, development of software systems of special functions, and the assessments of technical specification were also be introduced. This sensor adopted many new technologies, such as the applications of piezoresistant effect and heat sensitive effect can effectively measure the pressure and temperature, digital signal processing technology was used to extract and treat signals, and resist interference, encapsulation technology was used to keep the normal run of sensor under a harsh environment. Thus, the on-line compound multi-functional temperature/pressure sensor can be applied better to supervise the production of wood-based panels. All technical specifications of the compound multi-functional sensor were tested and the results met the requirements of the equipments.

Multi-functional optical fiber sensor system based on a dense wavelength division multiplexer

We propose a novel and efficient multi-functional optical fiber sensor system based on a dense wavelength division multiplexer(DWDM).This system consists of an optical fiber temperature sensor, an optical fiber strain sensor, and a 48-channel DWDM.This system can monitor temperature and strain changes at the same time.The ranges of these two sensors are from-20℃ to 100℃ and from-1000 με to 2000 με, respectively.The sensitivities of the temperature sensor and strain sensor are 0.03572 nm/℃ and 0.03808 nm/N, respectively.With the aid of a broadband source and spectrometer,different kinds and ranges of parameters in the environment can be monitored by using suitable sensors.

Quasi-distribution Appraisal about Finite Element Analysis of Multi-functional Structure Made of Honeycomb Sandwich Materials

A new appraisal method（QDA, quasi-distribution appraisal） which could be used to evaluate the finite element analysis of multi-functional structure made of honeycomb sandwich materials is developed based on sub-section Bezier curve. It is established by simulating the distribution histogram data obtained from the numerical finite element analysis values of a satellite component with sub-section Bezier curve. Being dealt with area normalization method, the simulation curve could be regarded as a kind of probability density function（PDF）, its mathematical expectation and the variance could be used to evaluate the result of finite element analysis. Numerical experiments have indicated that the QDA method demonstrates the intrinsic characteristics of the finite element analysis of multi-functional structure made of honeycomb sandwich materials, as an appraisal method, it is effective and feasible.

Considering calcium-binding proteins in invertebrates: multi-functional proteins that shape neuronal growth

Calcium is a critical second messenger molecule in all cells and is vital in neurons for synaptic transmission.Given this importance,calcium ions are tightly controlled by a host of molecular players including ion channels,sensors,and buffering proteins.Calcium can act directly by binding to signaling molecules or calcium’s effects can be indirect,for example by altering nuclear histones.

Analysis of Dynamic Cross Response between Spindles in a Dual Spindle Type Multi-Functional Turning Machine

In order to meet increasing demand for higher productivity and flexibility, recently many kinds of multi-functional machine tools, which are capable of multiple machining functions or different kinds of machining processes on one machine, have been developed and widely used in manufacturing industries. In this study, a multi-functional turning lathe, which has two spindles and two turrets so that multiple turning operations and various machining processes could be performed simultaneously, has been developed. Furthermore, the equations of correlation between whole responses and cross responses of the two spindles have been derived to examine to what extent the two spindles affect each other’s vibrations.

Design and Development of a Multi-functional Laparoscopic Device

This study presents a design of a multifunctional laparoscopic appendectomy device that includes three surgical instruments commonly used in laparoscopic appendicitis surgeries:endoloop,endobag and scissors.It collects these three independent surgical tools in a single laparoscopic appendectomy device.These days there is a trend of moving to multi-functional surgery devices during minimally invasive surgery.The main reasons behind the minimal invasive surgery are to avoid changing the devices several times during the operation,to reduce the time spent in operation,to increase the efficiency of the operation,to facilitate the follow-up of the camera and devices,and to leave trocars to be used for other surgical instruments.The multi-functional appendectomy device that,we present here,provides these benefits.The standard trocar entries are appropriate for its usage.The presented multifunctional laparoscopic appendectomy device offers more practical use in comparison to individual devices.On the other hand,development of these multi-functional surgery devices can be directly enhanced to the robotic surgery devices.

Design and Development of a Forest Nursery, for the Enhancement of Multi-Functional Agriculture and for a Didactical Purpose

The experimental idea of the present project was elaborated in order to create a structure where different categories and institutions could collaborate, with the common aim to develop a sustainable and profitable agriculture in mountain and marginal areas. The target was the recovering of an abandoned agricultural site, throughout its re-organisation, re-qualification and auto-sustainability, involving local citizens. This approach was based on three further broad functions such as environmental, economic and social purposes. This cooperation, that allows the capitalization of local knowledge and the forging of relationships between local and external sources of expertise, information and advice, is fundamental to the future of existing rural communities, in particular in mountain areas. The model proposed, with the elaboration of a management software and technical agronomic sheets, could be an incentive for the activities already present in that region and to stimulate new ones. The enhancing of the native ecological system, the biodiversity tutelage and the valorization of the knowledge of the territory is the basic requirement for the successful of any land management.

A Portable Multi-functional Real-time Digital Simulator Dedicated to Protective Relay Testing

The paper intfoduces a PC-DSP based real-time digital simulator which is portable in size and aimed at the closed-loop testing of various types of protective relays for their design and application. The simulator can be widely used in not only concerning utilities but also manufacturers and research / certification institutes because of its many functions. The hardware architecture and software implementation of the simulator are described. The main features and functions of the simulator are also

独参汤结合米索前列醇对产后宫缩乏力性出血凝血功能和子宫复旧状况的影响

目的评价独参汤结合米索前列醇对产后宫缩乏力性出血患者凝血功能和及子宫复旧状况的影响。方法选择2019年4月—2022年4月医院收治的产后宫缩乏力性出血患者96例为研究对象,依据随机数字表法将患者分为研究组和对照组,每组48例。对照组患者采用常规疗法治疗,密切监测患者的生命体征,包括血压、呼吸、心跳和心率等数据变化。检测出血量,并提前做好相应的准备,可按摩患者子宫,帮助止血。肌内注射宫缩素,每12 h注射1次,剂量为10 U,并将米索前列醇400置入产妇肛门。研究组患者在对照组治疗的基础上,口服独参汤治疗。将30 g生晒参和1000 mL蒸馏水煎,煎至150 mL,胎儿娩出后,每8 h口服1次,1次30 mL。比较两组患者产后24 h、产后48 h和产后72 h的出血量。收集方法:羊水排尽后,更换尿垫和吸引瓶,采用称重法计算。分别在生产前、治疗后24 h抽取静脉血,使用凝血分析仪检测凝血酶原时间(Prothrombin time, PT)、活化部分凝血活酶时间(Activated partial thromboplastin time, APTT)、纤维蛋白原(Fibrinogen, FIB)和凝血酶时间(Thrombin time, TT)。产后随访1个月,比较两组患者宫腔积血发生率、子宫复旧不良发生率、恶露持续时间和宫底高度,比较治疗疗效。结果研究组中达到显效标准的有21例,占比43.75%,达到有效标准的有23例,占比47.92%,无效的有4例,占比8.33,总有效率为91.67%(44/48)。对照组中达到显效标准的有17例,占比35.42%,达到有效标准的有20例,占比41.67%,无效的有11例,占比22.92%。组间结果比较显示,χ^(2)=3.872,P=0.049;研究组产后24 h、产后48 h和产后72 h的出血量均低于对照组(P<0.05);两组治疗后凝血相关指标PT、APTT和TT水平较治疗前降低,FIB水平较治疗前升高。组间结果比较显示,研究组治疗后PT、APTT和TT水平高于对照组,FIB水平低于对照组(P<0.05);研究组患者宫腔积血发生率、子宫复旧不良发生率均低于对照组,恶露持续时间低于对照组(P<0.05)。两组宫底高度比较差异无统计学意义(P>0.05)。结论独参汤结合米索前列醇有助于改善宫缩乏力性出血患者的临床症状,减少出血量,改善凝血相关指标,缩短恶露持续时间,降低宫腔积血发生率,促进子宫复旧,具有较好地临床应用价值。

Polymer engineering for electrodes of aqueous zinc ion batteries

With the increasing demand for scalable and cost-effective electrochemical energy storage,aqueous zinc ion batteries(AZIBs)have a broad application prospect as an inexpensive,efficient,and naturally secure energy storage device.However,the limitations suffered by AZIBs,including volume expansion and active materials dissolution of the cathode,electrochemical corrosion,irreversible side reactions,zinc dendrites of the anode,have seriously decelerated the civilianization process of AZIBs.Currently,polymers have tremendous superiority for application in AZIBs attributed to their exceptional chemical stability,tunable structure,high energy density and outstanding mechanical properties.Considering the expanding applications of AZIBs and the superiority of polymers,this comprehensive paper meticulously reviews the benefits of utilizing polymeric applied to cathodes and anodes,respectively.To begin with,with adjustable structure as an entry point,the correlation between polymer structure and the function of energy storage as well as optimization is deeply investigated in respect to the mechanism.Then,depending on the diversity of properties and structures,the development of polymers in AZIBs is summarized,including conductive polymers,redox polymers as well as carbon composite polymers for cathode and polyvinylidene fluoride-,carbonyl-,amino-,nitrile-based polymers for anode,and a comprehensive evaluation of the shortcomings of these strategies is provided.Finally,an outlook highlights some of the challenges posed by the application of polymers and offers insights into the potential future direction of polymers in AZIBs.It is designed to provide a thorough reference for researchers and developers working on polymer for AZIBs.

miR-125a靶向转录无调性碱性螺旋环螺旋转录因子8对肺腺癌恶性进展的影响

目的探讨miR-125a通过靶向转录无调性碱性螺旋环螺旋转录因子8(ATOH8)对肺腺癌恶性进展的影响。方法通过在线数据库UALCAN分析ATOH8在肺腺癌中的表达水平及其与患者生存率的相关性,以及miR-125a在肺腺癌中的表达水平及其与肺癌进展的关系;提取肺腺癌及癌旁正常组织总RNA,实时PCR分析ATOH8表达水平差异;将ATOH8过表达载体转染至肺腺癌细胞中,CCK-8法检测过表达ATOH8对肺腺癌细胞存活能力的影响;预测与ATOH8的3’非翻译区(UTR)结合的微RNA(miRNA),将miR-125a模拟物和抑制物转染至肺腺癌细胞中,实时PCR和Western blotting检测ATOH8的表达水平变化。结果数据库及实时PCR验证结果显示,ATOH8在肺腺癌组织中显著下调(P<0.01);过表达ATOH8能够显著降低肺腺癌细胞存活能力(P<0.05);高表达ATOH8组患者5年生存率显著升高(P<0.05);miR-125a能够与ATOH8的3’UTR结合,显著抑制其表达(P<0.05)。miR-125a在有吸烟史、中晚期和淋巴转移的肺腺癌患者中显著上调(P<0.05)。结论ATOH8是肺腺癌潜在的抑癌基因,能够抑制肺腺癌细胞存活的能力,影响患者的5年生存率。miR-125a表达水平与吸烟史、肿瘤分期和淋巴转移密切相关。miR-125a能够靶向抑制肺腺癌患者ATOH8表达,是ATOH8在肺腺癌中异常表达的潜在因素。

肺癌组织中Atonal homolog 1与Disabled-2的表达及其临床意义

目的:分析Atonal homolog 1(Atoh1)和Disabled-2(Dab2)在肺癌组织中的表达及其与临床病理因素间的关系。方法:采用免疫组化方法检测Atoh1和Dab2在100例非小细胞肺癌中的表达情况。结果:在100例非小细胞肺癌中,Atoh1的细胞质和细胞核的平均阳性表达率分别为82.70%±19.06%和43.10%±27.16%,明显高于Atoh1在癌旁正常组织中的细胞质和细胞核的平均阳性表达率(71.80%±19.14%,18.77%±10.54%)。Atoh1在细胞核内的表达与肺癌的低分化(P=0.026)负相关,并且在肺腺癌(P=0.002)和女性患者(P=0.042)中阳性率较高。Dab2在细胞核内的表达与肺癌的原发灶T分期负相关(P=0.025),并且与肺癌的TNM分期相关(P=0.002)。Atoh1在肺癌中的细胞质表达与Dab2的细胞质表达显著相关(P<0.001)。结论:Atoh1在细胞核内的表达与肺癌的低分化负相关,Dab2在细胞核内的表达与肺癌患者TNM分期负相关。Atoh1和Dab2在肺癌组织中可能具有协同表达的现象。

Bi-layered coded metasurface for multi-functional hologram with broadband transmission and efficient reflection

A multi-functional full-space metasurface based on frequency and polarization multiplexing is proposed.The metasurface unit consists of metallic patterns printed on the two faces of a single-layered dielectric substrate.The unit cell can control electromagnetic wavefronts to achieve a broadband transmission with amplitudes greater than 0.4 from 4.4 to 10.4 GHz.Meanwhile,at 11.7 GHz and 15.4 GHz,four high-efficiency reflection channels with a reflection amplitude greater than 0.8 are also realized.When illuminated by linearly polarized waves,five different functions can be realized at five different frequencies,which are demonstrated by theoretical calculations,full-wave simulations,and experimental measurements.

Multi-functional epoxides cross-linked collagen sponges for tissue engineering scaffolds

With the efficient cross-linking abilities and the flexible regulation abilities to the performances of cross-linked products,the multi-functional aliphatic epoxides were once widely used to cross-link the collagen-based materials in the last century.In present work,the multi-functional epoxides were used to construct and cross-link collagen sponges for tissue engineering scaffolds,which was hoped to board the theoretical system of epoxides and explore their potentials for modern applications.The bi-to tetra-functional epoxides were used to cross-link collagen solutions and establish the gel-like precursors,then using freeze-drying to form the final sponges.The SEM observed that the sponges had shown regular porous structures with a wide range of pore sizes from 160 to 440μm.The sponges had presented the resistance to enzymatic degradation,shape-remaining ability,and reversible compressibility in aqueous environments,which all could be regulated through the functionalities of epoxides.The regulation abilities of multi-functional epoxides on the performances of sponges had been mainly achieved through the cross-linking degrees that the higherfunctionality of epoxides would bring higher cross-linking degree.Such higher cross-linking degrees could enhance the elastic behaviors of gel-like precursors,and improve the compressive strengths and thermal stabilities of sponges.Nevertheless,the multi-functional epoxides had barely affected the safety of collagen sponges at the cellular level according to the results of CCK8 assay and the SEM and CLSM images of L929 fibroblasts cultured on the cross-sections of sponges.

In Situ Atomic Reconstruction Engineering Modulating Graphene-Like MXene-Based Multifunctional Electromagnetic Devices Covering Multi-Spectrum

With the diversified development of big data,detection and precision guidance technologies,electromagnetic(EM)functional materials and devices serving multiple spectrums have become a hot topic.Exploring the multispectral response of materials is a challenging and meaningful scientific question.In this study,MXene/TiO_(2)hybrids with tunable conduction loss and polarization relaxation are fabricated by in situ atomic reconstruction engineering.More importantly,MXene/TiO_(2)hybrids exhibit adjustable spectral responses in the GHz,infrared and visible spectrums,and several EM devices are constructed based on this.An antenna array provides excellent EM energy harvesting in multiple microwave bands,with|S11|up to−63.2 dB,and can be tuned by the degree of bending.An ultra-wideband bandpass filter realizes a passband of about 5.4 GHz and effectively suppresses the transmission of EM signals in the stopband.An infrared stealth device has an emissivity of less than 0.2 in the infrared spectrum at wavelengths of 6-14μm.This work can provide new inspiration for the design and development of multifunctional,multi-spectrum EM devices.

罪与罚:清朝废官军台效力赎罪研究

废官军台效力赎罪是清朝废官制度的重要内容,是针对“犯私罪之人”的惩治性举措。从将废官解送京师、发配军台,到废官服役于军台,直至捐赎与宽免,清朝都定有明章。在这一过程中,不仅体现出清朝中央及地方各部门间的联动关系、职官问责制度对官员的监督与约束,而且也彰显出清帝对用人取舍之权的掌控,皇帝是所有环节的最终裁决者。虽然清帝煞费苦心地区别各类废官,并对各种捐赎情况进行了审慎的分类,以期不同性质的废官都能受到相应的法律制裁和经济惩罚,但在封建王朝周期性政治危机的影响下,军台效力赎罪之制具有很大的局限性,最终在清末沦为一纸空文。