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TAKING A SECOND LOOK AT TECHNICAL COMMUNICATIONS PEDAGOGY

Journal of Technical Writing and Communication 1980年第4期10卷 283-291页

作者： Brockmann, R.John Division of Technology College of Engineering and Applied Sciences Arizona State University

Many current teaching practices in undergraduate technical communications are insensitive to students' career needs because they are based on mistaken notions concerning writing and the process of communication. The specific problem ares in current teaching practices include: the lack of emphasis on rewriting and on the cooperative element of technical communication, the overreliance on proscriptive strictures in graphics instruction, and the undue emphasis on large-group oratory in oral communications. Academic teaching methods need to be better informed by the practices and procedures of professional technical communicators in order to correct their mistaken notions and to more effectively meet students' career needs.

关键词： engineering WRITING

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Compact monolithic dual-wavelength distributed feedback laser with tunable wavelength spacing based on REC technique

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Chinese Optics Letters 2025年第3期23卷 031406-031406页

作者： Wang, Zhuoying Zhao, Jie Li, Zizhuo Sun, Zhenxing Sun, Wentao Nie, Jiaqiang Zhang, Yue Yin, Zhiqian Wang, Wenxuan Xiao, Rulei Chen, Xiangfei National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Key Laboratory of Intelligent Optical Sensing and Manipulation Institute of Optical Communication Engineering Nanjing University The Ministry of Education Nanjing210093 China Ocean College Jiangsu University of Science and Technology Zhenjiang212003 China

We propose and experimentally demonstrate the monolithic dual-waveguide (DW) distributed feedback (DFB) laser with tunable wavelength spacing. The differences in the chirp sampled grating with various index modulation amplitudes are theoretically elaborated. The wavelength spacing properties of the DW laser at different Bragg spacings are compared and analyzed. To validate the numerical investigation, the DW laser consisting of three sections is fabricated and implemented, where the chirp sampled grating with two equivalent π phase shifts is located. The simulated relationship between the Bragg wavelength spacing and the mode spacing is consistent with the experimental results. Owing to the prominent contribution of the three-section structure and chirp sampled grating, the tuning range of the wavelength spacing is extended significantly, and the cavity of the DW laser becomes compact. The experimental results indicate that the proposed scheme achieves a tuning range from 59.50 to 116.25 GHz. The proposed scheme paves an extraordinary avenue for the integration of laser devices in the applications of optical sensing and THz communication. © 2025 Chinese Optics Letters.

关键词： Distributed feedback lasers

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3D printing for tissue/organ regeneration in China

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Bio-Design and Manufacturing 2025年第2期8卷 169-242,I0001,I0002页

作者： Chaofan He Jiankang He Chengtie Wu Changshun Ruan Qi Gu Yongqiang Hao Yang Wu Shuo Bai Xiaoxiao Han Liliang Ouyang Jun Yin Hongzhao Zhou Zhuo Xiong Maobin Xie Lei Shao Jing Nie Liang Ma Cijun Shuai Changchun Zhou Xin Zhao Xuetao Shi Mengfei Yu Jiayin Fu Peng Wen Huixia Xuan Yuan Pang Yan’en Wang Yuan Sun Ziqi Gao Abdellah Aazmi Jingbo Zhang Tianhong Qiao Qixiang Yang Ke Yao Mao Mao Jianxin Hao Pinpin Wang Jirong Yang Huawei Qu Xinhuan Wang Xin Liu Shen Ji Shasha Liu Jingke Fu Bingxian Lu Mohan Wu Feng Chen Zihao Zheng Boqing Zhang Muyuan Chai Chaoying Zhang Mouyuan Sun Bo Peng Huayong Yang Yong He State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China Key Laboratory of 3D Printing Process and Equipment of Zhejiang Province School of Mechanical EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory for Manufacturing Systems Engineering Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050China Research Center for Human Tissue and Organ Degeneration Institute of Biomedicine and BiotechnologyShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Organ Regeneration and Reconstruction State Key Laboratory of Membrane BiologyInstitute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China Shanghai Engineering Research Center of Innovative Orthopaedic Instruments and Personalized Medicine Clinical and Translational Research Center for 3D Printing TechnologyShanghai 200011China School of Biomedical Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China Key Laboratory of Biopharmaceutical Preparation and Delivery Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China National Engineering Research Centre for High Efficiency Grinding Hunan UniversityChangsha 410082China Biomanufacturing Center Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China The Fourth Affiliated Hospital of Guangzhou Medical University Guangzhou 511436China School of Biomedical Engineering Guangzhou Medic

As surgical procedures transition from conventional resection to advanced tissue-regeneration technologies,human disease therapy has witnessed a great leap *** particular,three-dimensional(3D)bioprinting stands as a landmark in this setting,by promising the precise integration of biomaterials,cells,and bioactive molecules,thus opening up a novel avenue for tissue/organ *** by the editorial board of Bio-Design and Manufacturing,this review brings together a cohort of leading young scientists in China to dissect the core functionalities and evolutionary trajectory of 3D bioprinting,by elucidating the intricate challenges encountered in the manufacturing of transplantable *** further delve into the translational pathway from scientific research to clinical application,emphasizing the imperativeness of establishing a regulatory framework and rigorously enforcing quality-control ***,this review outlines the strategic landscape and innovative achievements of China in this field and provides a comprehensive roadmap for researchers worldwide to propel this field collectively to even greater heights.

关键词： 3D printing Bioprinting Tissue engineering Regenerative medicine

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Facile Microwave Synthesis of Kilogram-Scale Electrocatalysts with Nanocarbons Bridged Cobalt Active Sites for Enhanced Oxygen Electrocatalysis

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Advanced Energy Materials 2025年

作者： Huang, Junfeng Xu, Xiao Yan, Yusheng Zheng, Yong Yao, Yuechao Li, Zhangjian Yan, Yan Hui, Kwun Nam Zou, Jizhao Liu, Mingkai School of Mechanical Engineering Dongguan University of Technology Dongguan523808 China Shenzhen Key Laboratory of Special Functional Materials & Shenzhen Engineering Laboratory for Advance Technology of Ceramics College of Materials Science and Engineering Shenzhen University Guangdong Shenzhen518060 China College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Yichang443002 China Power Battery & Systems Research Center State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian116023 China School of Chemistry & Chemical Engineering Anhui University of Technology Anhui Ma'anshan243002 China Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade Taipa999078 China

Oxygen reductions and evolution reactions (ORR/OER) are pivotal electrochemical processes in fuel cells and metal-air batteries, yet the rapid, large-scale production of efficient ORR/OER electrocatalysts remains challenging. Herein, a groundbreaking microwave-synthesis strategy is presented that enables the rapid and facile preparation of kilogram-scale ORR/OER electrocatalysts. The unique microwave irradiation generates instantaneous thermal energy, facilitating the formation of nano-carbon bridges that interconnect high-density active sites comprising cobalt single atoms and nanoparticles. This innovative architectural configuration significantly enhances the kinetics of electron/mass transfer and maximizing the accessibility of active sites. The optimized carbon-bridged cobalt catalyst (CBCo-800) demonstrates a commendable half-wave potential (E 1/2) of 0.86 V versus RHE and a minimal overpotential difference (ΔE) of 0.696 V. Furthermore, lab-assembled zinc-air battery utilizing CBCo-800 achieved a great specific capacity of 794 mAh g−1 and sustained over 650 h, outperforming commercial Pt/C and RuO2 catalysts. Density functional theory (DFT) calculations elucidate that the nanocarbon bridge between the dual-active sites boosts oxygen activation and optimizes the adsorption/desorption dynamics of *OH/*OOH intermediates, thereby lowering the energy barriers for ORR/OER. This study offers a facile solution for producing dual-active site materials, and also establishes a robust platform for the mass production of high-performance electrocatalysts. © 2025 Wiley-VCH GmbH.

关键词： Cobalt

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Screening of chilli cultivars with low cadmium accumulation and analysis of their physiological properties of tolerance

Screening of chilli cultivars with low cadmium accumulation ...

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陕西省植物学会2025年学术研讨会——陕西省植物资源保护与开发利用

作者： Yating Zhang Shuhe Wei Huiping Dai Guannan Kong Li Zhan Chao Zhang Kaimei Huang College of Biological Science & Engineering Shaanxi Province Key Laboratory of Bio-resourcesQinling-Bashan Mountains Bioresources Comprehensive Development C.I.C State Key Laboratory of Biological Resources and Ecological Environment Jointly Built By Qinba Province and Ministry Shaanxi University of Technology Key Laboratory of Pollution Ecology and Environment Engineering Institute of Applied Ecology Chinese Academy of Sciences

Chilli（Capsicum annuum L.） is a widely eaten condiment that may accumulate the toxic element cadmium（Cd） from environments, thus presenting a human health risk. This experiment aimed to identify cultivars with low Cd-uptake characteristics that could be used to produce safe spicy food in Cd-contaminated soil. Five chilli cultivars responses to Cd exposure in soils with 0.18 mg kg（CK）, 2.88 mg kg（T1）, 7.69 mg kg（T2）, 16.72 mg kg（T3） and 33.46 mg kg（T4） in a greenhouse were compared. The results showed that Cd concentration in roots, shoots and fruits of the cultivar Bolafengxiang were the ***, its biomass was not reduced compared to the CK, and both the enrichment factor（EF） and translocation factor（TF） were all lower than 1. Notably, under soil Cd concentrations of 2.88 mg kg, the Cd content in the fruits of Bolafengxiang was 0.07 mg kg, which is below the safety standard limit(0.1 mg kg) for "Green Food Chilli Products".This indicates its potential for low Cd *** above research indicates that selecting and cultivating low-Cd-accumulating chilli cultivars is an effective approach to reduce Cd accumulation in edible parts, thereby ensuring agricultural food safety.

关键词： Chilli cultivar Low cadmium accumulation Physiological indicator Tolerance property

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Adjusting the active site of single Co atoms on CeO2 via cyano functional groups for selective H2O2 electrosynthesis at high yield

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applied Catalysis B: Environmental 2025年 374卷

作者： Mei, Xueli Zhao, Xueyang Du, Huidong Deng, Bangwei Zhuo, Huawei Li, Qin Zhu, Chenyuan Xie, Hongtao Cao, Yali Li, Yizhao Dong, Fan University of Electronic Science and Technology of China Huzhou313001 China Institute of Applied Chemistry College of Chemistry Xinjiang University Urumqi830046 China Key Laboratory of Advanced Functional Materials Autonomous Region Urumqi830046 China State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University Urumqi830046 China School of Environmental Science and Engineering Southwest Jiaotong University Chengdu611756 China Research Center for Carbon−Neutral Environmental & Energy Technology Institute of Fundamental of Frontier Sciences University of Electronic Science and Technology of China Chengdu611731 China

The electrocatalytic two−electron oxygen reduction reaction (2e−ORR) offers a promising alternative to the traditional energy−intensive anthraquinone oxidation process for in situ synthesis of hydrogen peroxide (H2O2). However, constructing a novel catalyst to enhance the H2O2 selectivity remains a significant challenge in the field. In this work, we propose a novel strategy for charge regulation involving the axial attachment of an electron−withdrawing cyano group (−C[tbnd]N) to enhance the performance of Co single−atom catalysts in the 2e−ORR. This strategy is validated through the preparation of −C[tbnd]N modified single−atom Co doped cerium dioxide (CeO2) catalysts using an electrochemical in situ reconstruction method. The optimized catalyst demonstrated 97 % H2O2 selectivity and 11.2 mol gcat.−1 h−1 yield in 0.1 M KOH solution, outperforming the majority of reported catalysts. Both calculations and in−situ experiments revealed that the introduction of the −C[tbnd]N group facilitates the transition of electrons around the Co atom from a localized to a delocalized state, thus optimizes the adsorption energy of the *OOH intermediate to boost 2e−ORR performance. This study not only provides new insights into the targeted optimization of catalytic performance through −C[tbnd]N group modification but also offers significant theoretical and experimental foundations for the design of highly efficient 2e−ORR catalysts. © 2025 Elsevier B.V.

关键词： Peroxides

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A Platinum Complex-Based Dimerized Electron Acceptor for Efficient Organic Solar Cells

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Advanced Energy Materials 2025年

作者： Cheng, Yang Jiang, Dongcheng Xiao, Chengyi Li, Mengdi Lin, Yi Zhao, Chaowei Tang, Zheng Yin, Hang Li, Weiwei Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical Technology Beijing100029 China School of Physics State Key Laboratory of Crystal Materials Shandong University Jinan250100 China Institute of Applied Chemistry Jiangxi Academy of Sciences Nanchang330096 China State Key Laboratory for Medication of Chemical Fibers and Polymer Materials Center for Advanced Low-dimension Materials College of Materials Science and Engineering Donghua University Shanghai201620 China

Metal–organic complexes have demonstrated excellent performance in organic light-emitting diodes, yet their potential in organic solar cells (OSCs) remains underexplored. In this study, a novel metal–organic complex, Pt-Y, which features a platinum core connected to Y-acceptor arms, for application in OSCs is designed and synthesized. The dimerized Pt-Y acceptor is prepared through straightforward reactions, with the key precursor linking the platinum metal and Y-acceptors synthesized through Sonogashira coupling. Steady-state and transient photoluminescence measurements revealed that Pt-Y exhibits distinct singlet and triplet states with microsecond lifetimes—significantly longer than the nanosecond lifetimes of Y-acceptors without the metal. Incorporating Pt-Y as a third component in ternary OSCs has resulted in a remarkable efficiency of 19.2%. Further morphological analysis and transient absorption measurements indicate that the dimerized Pt-Y displays excellent miscibility with the Y-acceptor, leading to minimal phase separation and the formation of fibrillar structures. These structures enhance charge separation and transport while reducing charge recombination. This work presents a facile approach to developing metal–organic complexes with exceptional photovoltaic performance in OSCs. © 2025 Wiley-VCH GmbH.

关键词： Organic light emitting diodes (OLED)

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Selective production of olefins from methanol over a heteroatomic SAPO-34 zeolite

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Science Bulletin 2025年第5期70卷 694-703页

作者： Zhaodong Zhu Mengtian Fan Meng He Bing An Yinlin Chen Shaojun Xu Tianze Zhou Alena M.Sheveleva Meredydd Kippax-Jones Lutong Shan Yongqiang Cheng Hamish Cavaye Jeff Armstrong Svemir Rudić Stewart F.Parker William Thornley Evan Tillotson Matthew Lindley Shenglong Tian Daniel Lee Shiyu Fu Mark D.Frogley Floriana Tuna Eric J.L.McInnes Sarah J.Haigh Sihai Yang Department of Chemistry University of ManchesterManchesterM139PLUK Departmentof Chemical Engineering University of ManchesterManchesterM139PLUK Photon Science Institute University of ManchesterManchesterM139PLUK The Chemical and Engineering Materials Division(CEMD) Neutron Sciences DirectorateOak Ridge National LaboratoryOak RidgeTN 37831USA ISIS Facility STFC Rutherford Appleton LaboratoryDidcotOX110QXUK Department of Materials University of ManchesterManchesterM139PLUK CAS Key Laboratory of Science and Technology on Applied Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510641China Diamond Light Source Harwell Science CampusDidcotOX110DEUK College of Chemistry and Molecular Engineering Beijing National Laboratory for Molecular SciencesPeking UniversityBeijing 100871China

The methanol-to-olefins(MTO)process has the potential to bridge future gaps in the supply of sustainable lower *** the selectivity of propylene and ethylene and revealing the catalytic role of active sites are challenging goals in MTO ***,we report a novel heteroatomic silicoaluminophosphate(SAPO)zeolite,SAPO-34-Ta,which incorporates active tantalum(V)sites within the framework to afford an optimal distribution of ***-34-Ta exhibits a remarkable total selectivity of 85.8%for propylene and ethylene with a high selectivity of 54.9%for propylene on full conversion of methanol at 400°*** situ and operando synchrotron powder X-ray diffraction,diffuse reflectance infrared Fourier transform spectroscopy and inelastic neutron scattering,coupled with theoretical calculations,reveal trimethyloxonium as the key reaction intermediate,promoting the formation of first carbon-carbon bonds in *** tacit cooperation between tantalum(V)and Brønsted acid sites within SAPO-34 provides an efficient platform for selective production of lower olefins from methanol.

关键词： Methanol-to-olefin SAPO-34 Propylene Inelastic neutron scattering Trimethyloxonium

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Packaging Metal Atomic Clusters for Universal and Robust Protection through Cluster Beam Process

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Advanced Science 2025年 e2503347页

作者： Lu, Siqi Zhao, Zixiang Han, Jinsen Wang, Jun Zhang, Yongxin Du, Yu Guo, Fangyu Wang, Zhichao Wang, Shenghui Tang, Sichen Hu, Kuojuei Wan, Jianguo Dai, Jiayu Song, Fengqi National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and School of Physics Nanjing University Nanjing210093 China Institute of Atom Manufacturing Nanjing University Suzhou215163 China Nanjing Institute of Atom Manufacturing Nanjing211800 China College of Science National University of Defense Technology Changsha410073 China Hunan Key Laboratory of Extreme Matter and Applications National University of Defense Technology Changsha410073 China Key Laboratory of Optoelectronic Materials and Devices Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China Hunan Research Center of the Basic Discipline for Physical States National University of Defense Technology Changsha410073 China National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences Nanjing University Nanjing210093 China

Size-selected gas-phase aggregated metal clusters have long been considered as embryos of materials. However, a significant proportion of these clusters are susceptive to damage when exiting vacuum. Consequently, effective protection is highly desirable. Here a cluster packaging and protection strategy is presented based on controllable cluster beam implantation into polymethyl methacrylate (PMMA). In this strategy, the size selection of gas-phase clusters and the synergistic heating of PMMA during implantation are combined, thereby achieving nondestructive packaging of atomically precise cluster under soft-landing conditions. The packaged clusters exhibit robust and universal protection. Robustness is reflected in the unaltered oxidation resistance of Mo clusters after exposure to air for over 30 days, as well as the effective agglomeration resistance at temperatures up to 100 °C or in liquid. Universality is demonstrated by the successful protection of a wide range of size-selected clusters, including Mo clusters ranging from Mo2057 to Mo6, and Ta2057, Cu923, W55, (Re–Mo)147 clusters. This protection is attributed to both a stable, albeit weak PMMA-Mo bonding, forming Mo─O─C─C species that stabilize the clusters, and the direct implantation of gas-phase cluster into solid-phase PMMA. This helps pave the way for further investigation and applications of gas-phase metal clusters. © 2025 The Author(s). Advanced Science published by Wiley-VCH GmbH.

关键词： Molybdenum oxide

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Frequency-modulated continuous-wave quantum interferometric lidar with enhanced accuracy and resolution

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Physical Review applied 2025年第3期23卷 034055-034055页

作者： Ming-Da Huang Zhan-Feng Jiang Hong-Yi Chen Ying Zuo Xiao-Peng Hu Hai-Dong Yuan Li-Jian Zhang Qi Qin College of Physics and Optical Engineering Shenzhen University Shenzhen 518060 China State Key Laboratory of Radio Frequency Heterogeneous Integration Shenzhen University Shenzhen 518060 China Institute of Intelligent Optical Measurement and Detection Shenzhen University Shenzhen 518060 China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China International Quantum Academy Shenzhen 518048 China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China National Laboratory of Solid State Microstructures and College of Engineering and Applied Sciences Nanjing University Nanjing 210093 China Department of Mechanical and Automation Engineering The Chinese University of Hong Kong Shatin Hong Kong SAR China Quantum Science Center of Guangdong-HongKong-Macao Greater Bay Area (Guangdong) Shenzhen 518045 China

The range and velocity of a moving object can be ascertained using the sensing technique known as light detection and ranging (lidar). It has recently been suggested that quantum lidar, which uses entangled states of light, can enhance the capabilities of lidar. Entangled pulsed light is used in prior quantum lidar approaches to assess both range and velocity at the same time using the time of flight and Doppler shift. However, the detection of entangled pulsed light is often inefficient and constrained by the temporal resolution of the detectors. Here, we investigate a quantum lidar utilizing a linear interferometer operating on a frequency-modulated continuous wave (FMCW) instead of pulses. Our findings demonstrate that the quantum FMCW lidar enables simultaneous measurements of range and velocity with quantum-enhanced accuracy and resolution, as well as superresolution phase imaging. Through self-heterodyne detection with a linear optical design, the signals of the quantum FMCW lidar with entangled photon pair can be efficiently carried out electronically by down-converting the optical signal to the microwave region. As a result, it is better suited for practical implementations.

关键词： Frequency modulation

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