Predicament of College Students with Economic Difficulties in Career Development and Assistance Strategies

College students with economic difficulties are the vulnerable groups who are easy to fall into the predicament of career development. They are mainly characterized as weak career awareness,unclear self-awareness,lack of social resources,and poor comprehensive quality. This paper comprehensively analyzed the predicament of college students and causes. On the basis of causes,it came up with strategies including establishing a perfect whole-process education mechanism,strengthening psychological health and ideological and political education,actively expanding social practice internship platform,and vigorously cultivating employment competitiveness,so as to help students with economic difficulties to get out of their predicament and realize sustainable and comprehensive career development.

KOH-assisted aqueous synthesis of bimetallic metal-organic frameworks and their derived selenide composites for efficient lithium storage

To solve low efficiency,environmental pollution,and toxicity for synthesizing zeolitic imidazolate frameworks(ZIFs)in organic solvents,a KOH-assisted aqueous strategy is proposed to synthesize bimetallic ZIFs polyhedrons,which are used as precursors to prepare bimetallic selenide and N-doped carbon(NC)composites.Among them,Fe–Co–Se/NC retains the three-dimensional(3D)polyhedrons with mesoporous structure,and Fe–Co–Se nanoparticles are uniform in size and evenly distributed.When assessed as anode material for lithium-ion batteries,Fe–Co–Se/NC achieves an excellent initial specific capacity of 1165.9 m Ah·g^(-1)at 1.0 A·g^(-1),and the reversible capacity of Fe–Co–Se/NC anode is 1247.4 m Ah·g^(-1)after 550 cycles.It is attributed to that the uniform composite of bimetallic selenides and N-doped carbon can effectively tune redox active sites,the stable 3D structure of Fe–Co–Se/NCs guarantees the structural stability and wettability of the electrolyte,and the uniform distribution of Fe–Co–S nanoparticles in size esuppresses the volume expansion and accelerates the electrochemical reaction kinetics.

ViT-based Terrain Recognition System for wearable soft exosuit

Terrain classification and force assistance strategies in complex environments have always piqued the interest of many researchers.For wearable soft exosuits,inaccurate terrain recognition can easily introduce undesired assist forces that can easily injure the wearer.Because of these problems,we introduced a depth camera into the exosuit system,perform classification of terrain based on a Vision Transformer(ViT),and optimized the control algorithm,which is known as a ViT-Based Terrain Recognition System(TTRS).First,we used the Transformer algorithm to achieve a considerable classification effect in terrain recognition.We also introduced terrain recognition as prior knowledge into the force assistance strategy of the exosuit,providing different force assistance to the exosuit in different terrains.Subsequently,we performed human experiments with seven able-bodied people(six males and one female).The promising results demonstrate that our classification accuracy can reach 99.2%under six different terrains and that it can smoothly switch the force–assist curve in different terrains to better adapt to the complex terrain and improve the walking effect.The aforementioned terrain recognition algorithms and force–assist strategies may positively influence the study of soft exosuit,powered prostheses,and orthotics.

Guideline for Diagnosis and Treatment of Infertility in Advanced Age Women(Revised Edition)

As more and more couples postpone their childbearing plan,and Chinese two-child policy is fully liberalized,the proportion of advanced-age parents gradually increases.However,ovarian function gradually descends with age,and the incidences of uterine fibroids,scarred uterus,and pelvic inflammation disease significantly increase,which increases the risk of infertility.Even though the advanced-age women successfully get pregnant through assisted reproductive technology(ART),the risks of pregnancy complications and medical and surgical complications(such as miscarriage,gestational diabetes,gestational hypertension,intrauterine fetal death,low birth weight of newborn,or premature birth)will increase with age.Currently,the consistency of diagnosis and treatment strategies on elderly patients with infertility is still lacking,and the efficacy of the diagnosis and treatment is even worse.In light of the above situations,the specialized committee organized experts of reproductive endocrinology and ART to compose this guideline,aiming for standardizing the process of diagnosis and treatment on advanced-age infertile women.This guideline interprets reproductive status and related fertility evaluation on advanced-age infertile women,and discusses prepregnancy preparation of body and nutrition and consultation,as well as related risk assessment of pregnancy.It also analyzes the current clinical and laboratory hot issues:the genetic characteristics of advanced-age women,evaluation,counseling,and corresponding laboratory screening,diagnostic methods,and operational norms.In addition,for the advanced-age women with high incidence of medical and surgical complications,this guideline gives us norms of diagnosis and treatment on different complications.Finally,strategies of ART are made for the advanced-age infertile women,which can provide basis and guidance for their diagnosis and treatment.

HCl guided morphology and conductivity of chiral PPy nanostructures toward efficient electromagnetic wave absorption

To solve the severe electromagnetic(EM)radiation from the widespread application of electronic equipment,we developed a simple template-guided oxypolymerization strategy to synthesize polypyrrole(PPy)planar helixes as an efficient EM wave(EMW)absorber,and systematically investigated the morphology-dependent chirality,conductivity,and microwave absorption properties.As HCl concentration[HCl]varied from 0 to 2.0 M,the morphology evolved from planar helix to 3D cross-linking network structures,the conductivity increased from 0.0019 to 0.0302 S/cm,and the EM parameters peaked at[HCl]=0.5 M.Compared to other absorbers,the PPy planar helix formed at[HCl]=0 M possessed wider absorption band(5.84 GHz),smaller matching thickness(1.6 mm),lower loading(25 wt.%),and intenser absorption(-48.17 dB).The reason lies in the strong attenuation capability,multiple resonances,multiple scattering,and good impedance matching generated by chiral PPy planar helixes with a distinctive helical configuration,doped heteroatoms(O,S),and a local conductive network.Our results suggest that PPy planar helixes offer great promise for fields such as chiral sensors,electronics,optics,chiral catalysis,and EMW absorption and shielding due to their distinctive morphology,tunable conductivity,and outstanding EMW absorption properties(EMWAPs).