keyword
https://read.qxmd.com/read/38626504/a-delayed-decoupling-methyl-trosy-pulse-sequence-for-atomic-resolution-studies-of-folded-proteins-and-rnas-in-condensates
#1
JOURNAL ARTICLE
Rashik Ahmed, Atul K Rangadurai, Lisa Ruetz, Martin Tollinger, Christoph Kreutz, Lewis E Kay
Solution NMR spectroscopy has tremendous potential for providing atomic resolution insights into the interactions between proteins and nucleic acids partitioned into condensed phases of phase-separated systems. However, the highly viscous nature of the condensed phase challenges applications, and in particular, the extraction of quantitative, site-specific information. Here, we present a delayed decoupling-based HMQC pulse sequence for methyl-TROSY studies of 'client' proteins and nucleic acids partitioned into 'scaffold' proteinaceous phase-separated solvents...
March 28, 2024: Journal of Magnetic Resonance
https://read.qxmd.com/read/38626501/lca-of-recycling-aluminium-incineration-bottom-ash-dross-and-shavings-in-a-rotary-furnace-and-environmental-benefits-of-salt-slag-valorisation
#2
JOURNAL ARTICLE
Alicia Vallejo Olivares, Elisa Pastor-Vallés, Johan Berg Pettersen, Gabriella Tranell
Recycling aluminium in a rotary furnace with salt-fluxes allows recovering valuable alloys from hard-to-recycle waste/side-streams such as packaging, dross and incinerator bottom ash. However, this recycling route generates large amounts of salt-slag/salt-cake hazardous wastes which can pose critical environmental risks if landfilled. To tackle this issue, the metallurgical industry has developed processes to valorise the salt-slag residues into recyclable salts and aluminium concentrates, while producing by-products such as ammonium sulphate and non-metallic compounds (NMCs), with applications in the construction or chemical industries...
April 15, 2024: Waste Management
https://read.qxmd.com/read/38626499/fabrication-of-molecularly-imprinted-carbon-nanotubes-integrating-ionic-liquids-for-efficient-detection-of-perfluoroalkyl-carboxylic-acid-in-environmental-water
#3
JOURNAL ARTICLE
Gang Li, Yahan Cui, Xiaonan Yang, Xuelian Xin, Hongyuan Yan, Dandan Han
It is extremely significant while challenging to accurately detect low-levels of perfluoroalkyl carboxylic acid compounds (PFCAs) in environmental water. Herein, adopting perfluorotetradecanoic acid as the dummy template, selective molecularly imprinted composites (CNTs@ILs@MIPs) grafted carbon nanotubes integrating hydrophilic ionic liquids were successfully prepared via surface imprinting and dummy-template imprinting techniques. The obtained CNTs@ILs@MIPs were applied as selective extraction adsorbent for specifically extract PFCAs in environmental water coupled with gas chromatography-mass spectrometry quantification...
April 4, 2024: Talanta
https://read.qxmd.com/read/38626487/enhancing-c-and-n-turnover-functional-bacteria-abundance-and-the-efficiency-of-biowaste-conversion-using-streptomyces-bacillus-inoculation
#4
JOURNAL ARTICLE
Ziyan Zhou, Xiaofei Shi, Parag Bhople, Jishao Jiang, Caspar C C Chater, Shimei Yang, Jesus Perez-Moreno, Fuqiang Yu, Dong Liu
Microbial inoculation plays a significant role in promoting the efficiency of biowaste conversion. This study investigates the function of Streptomyces-Bacillus Inoculants (SBI) on carbon (C) and nitrogen (N) conversion, and microbial dynamics, during cow manure (10% and 20% addition) and corn straw co-composting. Compared to inoculant-free controls, inoculant application accelerated the compost's thermophilic stage (8 vs 15 days), and significantly increased compost total N contents (+47%) and N-reductase activities (nitrate reductase: +60%; nitrite reductase: +219%)...
April 15, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38626486/optimization-of-synergistic-capturing-platinum-group-metals-by-fe-sn-and-its-mechanism
#5
JOURNAL ARTICLE
Xuefeng He, Yunji Ding, Zhisheng Shi, Baohuai Zhao, Chunxiao Zhang, Fenglan Han, Jing Ren, Shengen Zhang
Platinum group metals (PGMs) are strategic metals. Auto-exhaust catalysts are their main application fields. The recovery of PGMs from spent auto-exhaust catalysts has remarkable economic value and strategic significance. Aiming at the problems of ferrosilicon generation for Fe capturing and subsequent oxygen blowing to remove iron with high energy consumption and heat release, a technology of Fe-Sn synergistic capturing PGMs was proposed. Taking full the advantage of the lower melting point of Fe-Sn alloy (<1200 °C) and its unique affinity for PGMs, the PGMs were captured at approximate 1400 °C with Fe-Sn as the collector...
April 15, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38626485/field-tested-innovation-sustainable-utilization-of-secondary-alumina-dross-for-flash-setting-admixtures-production
#6
JOURNAL ARTICLE
Chao Chen, Dahai Yan, Xiaoyuan Li, Meijia Liu, Changhao Cui, Li Li
Secondary alumina dross (SAD) has emerged as an alternative to bauxite in the production of flash setting admixtures (FSA), a critical admixture in shotcrete. However, the presence of hazardous components has hampered its large-scale adoption. This study conducted field tests at an FSA factory, utilizing SAD as the primary raw material, to evaluate the feasibility and environmental risks. The results confirmed that SAD can effectively replace bauxite in FSA production without compromising quality, as it closely resembled the chemical properties of bauxite...
April 15, 2024: Journal of Environmental Management
https://read.qxmd.com/read/38626478/beyond-medical-knowledge-a-didactic-curriculum-focused-on-knowledge-wisdom-and-application
#7
JOURNAL ARTICLE
Katherine E McDaniel, Alexander Suarez, Dana G Rowe, Brandon Bishop, Joshua Jackson, Alankrita Raghavan, Caroline Folz, Stephen Harward, Brandon Smith, Steven Cook, C Rory Goodwin
OBJECTIVE: The aim of this study was to determine whether a flipped classroom curriculum coupled with case-based learning would improve residents' perceptions of the learning environment, improve education outcomes, and increase faculty engagement. Research suggests that active learning yields better educational results compared with passive learning. However, faculty are more comfortable providing lectures that require only passive participation from learners. METHODS: A council was created to identify issues with the current format of the resident didactic curriculum and to redesign the neurosurgical curriculum and conference per Accreditation Council for Graduate Medical Education (ACGME) requirements...
April 19, 2024: Journal of Neurosurgery
https://read.qxmd.com/read/38626459/polymeric-nanoparticles-for-drug-delivery
#8
REVIEW
Maximilian A Beach, Umeka Nayanathara, Yanting Gao, Changhe Zhang, Yijun Xiong, Yufu Wang, Georgina K Such
The recent emergence of nanomedicine has revolutionized the therapeutic landscape and necessitated the creation of more sophisticated drug delivery systems. Polymeric nanoparticles sit at the forefront of numerous promising drug delivery designs, due to their unmatched control over physiochemical properties such as size, shape, architecture, charge, and surface functionality. Furthermore, polymeric nanoparticles have the ability to navigate various biological barriers to precisely target specific sites within the body, encapsulate a diverse range of therapeutic cargo and efficiently release this cargo in response to internal and external stimuli...
April 16, 2024: Chemical Reviews
https://read.qxmd.com/read/38626439/the-value-of-transitory-protective-stomas-during-primary-debulking-surgery-for-advanced-epithelial-ovarian-cancer-a-retrospective-cohort-study
#9
JOURNAL ARTICLE
Sha Ni, Jiaqi He, Ling Ouyang
OBJECTIVES: Limited data are available on patients with advanced-stage epithelial ovarian cancer (OC) who require ostomy during primary cytoreductive surgery. This study aimed to investigate the application of postoperative and long-term oncological results from transitory protective stoma (TPS) formation during primary debulking surgery (PDS) for OC. METHODS: This is a retrospective cohort study with a single center. We identified patients with stage III-IV OC who underwent colon resection and anastomosis...
April 16, 2024: International Journal of Surgery
https://read.qxmd.com/read/38626437/women-s-representation-as-principal-investigators-among-pediatric-orthopaedic-clinical-trials-an-analysis-of-clinicaltrials-gov
#10
JOURNAL ARTICLE
Amir H Karimi, Robert J Burkhart, Monish Lavu, Aakash K Shah, R Justin Mistovich
INTRODUCTION: Despite recent efforts to increase the participation of women in orthopaedic surgery, there remains a gender gap, particularly when compared with other medical specialties. Acting as a principal investigator (PI) in a clinical trial can give physicians notable exposure and national recognition, which can improve their chances of promotion and tenure. This study aims to assess the proportion of women serving as PIs in pediatric orthopaedic clinical trials, examine associated trial characteristics, and explore geographic distribution...
April 10, 2024: Journal of the American Academy of Orthopaedic Surgeons
https://read.qxmd.com/read/38626434/treatment-of-shoulder-osteoarthritis-with-intact-rotator-cuff-and-severe-glenoid-retroversion
#11
JOURNAL ARTICLE
Melissa A Wright, Matthew J Smith, Christopher J Roach
The American Academy of Orthopaedic Surgeons has developed an Appropriate Use Criteria (AUC) for Treatment of Shoulder Osteoarthritis with Intact Rotator Cuff and Severe Glenoid Retroversion. Evidence-based information, in conjunction with the clinical expertise of physicians, was used to develop the criteria to determine the appropriateness of various treatments of shoulder osteoarthritis with intact rotator cuff and severe glenoid retroversion. The AUC for Treatment of Shoulder Osteoarthritis with Intact Rotator Cuff and Severe Glenoid Retroversion were derived by identifying scenarios evident during the clinical decision-making process on this topic...
April 10, 2024: Journal of the American Academy of Orthopaedic Surgeons
https://read.qxmd.com/read/38626429/applications-of-natural-language-processing-for-automated-clinical-data-analysis-in-orthopaedics
#12
JOURNAL ARTICLE
Yasir AlShehri, Arashdeep Sidhu, Laks V S Lakshmanan, Kelly A Lefaivre
Natural language processing is an exciting and emerging field in health care that can transform the field of orthopaedics. It can aid in the process of automated clinical data analysis, changing the way we extract data for various purposes including research and registry formation, diagnosis, and medical billing. This scoping review will look at the various applications of NLP in orthopaedics. Specific examples of NLP applications include identification of essential data elements from surgical and imaging reports, patient feedback analysis, and use of AI conversational agents for patient engagement...
April 10, 2024: Journal of the American Academy of Orthopaedic Surgeons
https://read.qxmd.com/read/38626428/low-power-perovskite-neuromorphic-synapse-with-enhanced-photon-efficiency-for-directional-motion-perception
#13
JOURNAL ARTICLE
Sixian Liu, Zhixin Wu, Zhilong He, Weilin Chen, Xiaolong Zhong, Bingjie Guo, Shuzhi Liu, Hongxiao Duan, Yanbo Guo, Jianmin Zeng, Gang Liu
The advancement of artificial intelligent vision systems heavily relies on the development of fast and accurate optical imaging detection, identification, and tracking. Framed by restricted response speeds and low computational efficiency, traditional optoelectronic information devices are facing challenges in real-time optical imaging tasks and their ability to efficiently process complex visual data. To address the limitations of current optoelectronic information devices, this study introduces a novel photomemristor utilizing halide perovskite thin films...
April 16, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38626424/engineered-exosomes-with-atf5-modified-mrna-loaded-in-injectable-thermogels-alleviate-osteoarthritis-by-targeting-the-mitochondrial-unfolded-protein-response
#14
JOURNAL ARTICLE
Tiancong Ma, Guangyu Xu, Tian Gao, Guanglei Zhao, Gangyong Huang, Jingsheng Shi, Jie Chen, Jian Song, Jun Xia, Xiaosheng Ma
Osteoarthritis (OA) progression is highly associated with chondrocyte mitochondrial dysfunction and disorders of catabolism and anabolism of the extracellular matrix (ECM) in the articular cartilage. The mitochondrial unfolded protein response (UPRmt ), which is an integral component of the mitochondrial quality control (MQC) system, is essential for maintaining chondrocyte homeostasis. We successfully validated the pivotal role of activating transcription factor 5 (ATF5) in upregulating the UPRmt , mitigating IL-1β-induced inflammation and mitochondrial dysfunction, and promoting balanced metabolism in articular cartilage ECM, proving its potential as a promising therapeutic target for OA...
April 16, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38626416/projected-atomic-orbitals-as-optimal-virtual-space-for-excited-state-projection-based-embedding-calculations
#15
JOURNAL ARTICLE
Ádám B Szirmai, Bence Hégely, Attila Tajti, Mihály Kállay, Péter G Szalay
The projected atomic orbital (PAO) technique is presented for the construction of virtual orbital spaces in projection-based embedding (PbE) applications. The proposed straightforward procedure produces a set of virtual orbitals that are used in the final, high-level calculation of the embedded active subsystem. The PAO scheme is demonstrated on intermolecular potentials of bimolecular complexes in ground and excited states, including Rydberg excitations. The results show the outstanding performance of the PbE method when used with PAO virtual orbitals compared with those produced using common orbital localization techniques...
April 16, 2024: Journal of Chemical Theory and Computation
https://read.qxmd.com/read/38626411/visualization-of-modified-bisarylbutadiyne-tagged-small-molecules-in-live-cell-nuclei-by-stimulated-raman-scattering-microscopy
#16
JOURNAL ARTICLE
Makoto Kawaguchi, Yuki Yonetani, Takaha Mizuguchi, Spencer J Spratt, Masato Asanuma, Hiroki Shimizu, Masato Sasaki, Yasuyuki Ozeki
Visualizing the distribution of small-molecule drugs in living cells is an important strategy for developing specific, effective, and minimally toxic drugs. As an alternative to fluorescence imaging using bulky fluorophores or cell fixation, stimulated Raman scattering (SRS) imaging combined with bisarylbutadiyne (BADY) tagging enables the observation of small molecules closer to their native intracellular state. However, there is evidence that the physicochemical properties of BADY-tagged analogues of small-molecule drugs differ significantly from those of their parent drugs, potentially affecting their intracellular distribution...
April 16, 2024: Analytical Chemistry
https://read.qxmd.com/read/38626408/switchable-single-to-multiwavelength-conventional-soliton-and-bound-state-soliton-generated-from-a-nbte-2-saturable-absorber-based-passive-mode-locked-erbium-doped-fiber-laser
#17
JOURNAL ARTICLE
Zhanqiang Hui, Aqian Wu, Dongdong Han, Tiantian Li, Lu Li, Jiamin Gong, Xiaohui Li
As a member of transition metal dichalcogenides (TMDs), NbTe2 has a work function of 5.32 eV and a band gap of 0 eV at the Fermi level, which enables it to possess broadband absorption characteristics and has huge potential in optoelectronic devices. In this work, a combination of liquid phase exfoliation (LPE) and optical deposition methods (ODMs) were used to fabricate a NbTe2 saturable absorber (SA). Based on the NbTe2 SA, a ring passive mode-locked erbium-doped fiber laser (PML-EDFL) was constructed by adding NbTe2 SA into the laser cavity...
April 16, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38626407/platelet-membrane-coated-r-sak-improves-thrombolytic-efficacy-by-targeting-thrombus
#18
JOURNAL ARTICLE
Rui Hua, Mingxi Li, Qingxia Lin, Mengying Dong, Xiaoxuan Gong, Zhenyu Lin, Yule Li, Chen Li, Tian Wu, Chunyue Tan, Wenhao Zhang, Qin Wang, Tianyu Wu, Xiaoyu Zhou, Fang Yang, Chunjian Li
Thrombolytic therapy is one of the most effective treatments for thrombus dissolution and recanalization of blocked vessels in thrombotic diseases. However, the application of the thrombolytic strategy has been limited due to unsatisfactory thrombolytic efficacy, relatively higher bleeding complications, and consequently restricted indications. Recombinant staphylokinase (r-SAK) is a third-generation thrombolytic agent produced by genetic engineering technology, which exhibits a better thrombolytic efficacy than urokinase and recombinant streptokinase...
April 16, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38626402/fast-response-and-low-power-self-heating-gas-sensor-using-metal-metal-oxide-metal-mmom-structured-nanowires
#19
JOURNAL ARTICLE
Min-Seung Jo, Sung-Ho Kim, So-Yoon Park, Kwang-Wook Choi, Sang-Hee Kim, Jae-Young Yoo, Beom-Jun Kim, Jun-Bo Yoon
With the escalating global awareness of air quality management, the need for continuous and reliable monitoring of toxic gases by using low-power operating systems has become increasingly important. One of which, semiconductor metal oxide gas sensors have received great attention due to their high/fast response and simple working mechanism. More specifically, self-heating metal oxide gas sensors, wherein direct thermal activation in the sensing material, have been sought for their low power-consuming characteristics...
April 16, 2024: ACS Sensors
https://read.qxmd.com/read/38626400/gate-tunable-multiband-van-der-waals-photodetector-and-polarization-sensor
#20
JOURNAL ARTICLE
Daozhi Shen, HeeBong Yang, Tarun Patel, Daniel A Rhodes, Thomas Timusk, Y Norman Zhou, Na Young Kim, Adam W Tsen
A single photodetector with tunable detection wavelengths and polarization sensitivity can potentially be harnessed for diverse optical applications ranging from imaging and sensing to telecommunications. Such a device will require the combination of multiple material systems with different structures, band gaps, and photoelectrical responses, which is extremely difficult to engineer using traditional epitaxial films. Here, we develop a multifunctional and high-performance photosensor using all van der Waals materials...
April 16, 2024: ACS Nano
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