keyword
https://read.qxmd.com/read/38458141/preparation-of-magnetic-amphiphilic-resin-microspheres-via-the-one-step-polymerization-method-and-extraction-of-four-glucocorticoids-for-hplc-ms-analysis
#21
JOURNAL ARTICLE
Zibo Zhou, Liang He, Tianyi Wang, Hongzhen Tang, Suzi Qin, Xueyan Nan, Wenbo Cheng, Haibo He, Pengli Bai
Amphiphilic materials can be used for sample preparation of chromatography or mass spectrometry. Amphiphilic materials with magnetic properties in combination with magnetic suction devices allow for automated sample preparation. However, conventional synthesis methods are cumbersome and not suitable for the mass production of the material. In this study, a micro-suspension polymerization method was developed to synthesize magnetic amphiphilic resin microspheres (MARMs), providing new ideas for the preparation of amphiphilic microspheres...
March 5, 2024: Journal of Chromatography. A
https://read.qxmd.com/read/38457313/reduction-of-left-ventricular-diastolic-pressure-as-a-key-regulator-of-infarct-coronary-flow-under-mechanical-left-ventricular-support
#22
JOURNAL ARTICLE
Tomoki Sakata, Spyros A Mavropoulos, Renata Mazurek, Francisco J Romeo, Anjali J Ravichandran, Jonas M Marx, Taro Kariya, Kiyotake Ishikawa
Restoring ischaemic myocardial tissue perfusion is crucial for minimizing infarct size. Acute mechanical left ventricular (LV) support has been suggested to improve infarct tissue perfusion. However, its regulatory mechanism remains unclear. We investigated the physiological mechanisms in six Yorkshire pigs, which were subjected to 90-min balloon occlusion of the left anterior descending artery. During the acute reperfusion phase, LV support using an Impella heart pump was initiated. LV pressure, coronary flow and pressure of the infarct artery were simultaneously recorded to evaluate the impact of LV support on coronary physiology...
March 8, 2024: Journal of Physiology
https://read.qxmd.com/read/38456199/multifunctional-flexible-magnetic-drive-gripper-for-target-manipulation-in-complex-constrained-environments
#23
JOURNAL ARTICLE
Meiying Zhao, Ye Tao, Wenshang Guo, Zhenyou Ge, Hanqing Hu, Ying Yan, Chaoxia Zou, Guiyu Wang, Yukun Ren
Soft actuators capable of remote-controlled guidance and manipulation within complex constrained spaces hold great promise in various fields, especially in medical fields such as minimally invasive surgery. However, most current magnetic drive soft actuators only have the functions of position control and guidance, and it is still challenging to achieve more flexible operations on different targets within constrained spaces. Herein, we propose a multifunctional flexible magnetic drive gripper that can be steered within complex constrained spaces and operate on targets of various shapes...
March 8, 2024: Lab on a Chip
https://read.qxmd.com/read/38453696/the-optimal-ratio-of-endoscope-sheath-diameter-with-negative-pressure-ureteral-access-sheath-an-in-vitro-research
#24
JOURNAL ARTICLE
Jingyu Shi, Ting Huang, Baiyang Song, Wanzhang Liu, Yue Cheng, Li Fang
PURPOSE: To maintain safe intrarenal pelvic pressure (IPP), the combination of flexible ureteroscope (fURS) and traditional ureteral access sheath (T-UAS) should maintain a basic rule that is the ratio of endoscope-sheath diameter (RESD) ≤ 0.75. However, the negative-pressure ureteral access sheath (NP-UAS) may break the rule of negative pressure suction. This study aimed to examine the effect of NP-UAS on IPP and flow rate (FR) with varying RESD. METHODS: In a 3D-printed renal model, flexible ureteroscopy lithotripsy (fURL) was replicated...
March 7, 2024: World Journal of Urology
https://read.qxmd.com/read/38453160/effect-of-passive-versus-active-abdominal-drainage-on-wound-infection-after-pancreatectomy-a-meta-analysis
#25
JOURNAL ARTICLE
Yanchun Han, Zuowei Wu, Jiafan Song, Qiang Zhang, Lijuan Wei, Huimin Lu
Following pancreatic resection, there may be a variety of complications, including wound infection, haemorrhage, and abdominal infection. The placement of drainage channels during operation may decrease the chances of postoperative complications. However, what kind of drainage can decrease the rate of postoperative complications is still a matter of debate. The purpose of this research is to evaluate the efficacy of both active and passive drainage for post-operation wound complications. From the beginning of the database until November 2023, EMBASE, the Cochrane Library and the Pubmed database have been searched...
March 2024: International Wound Journal
https://read.qxmd.com/read/38452711/continuous-ultrasonic-ozone-coupling-technology-assisted-control-of-ceramic-membrane-fouling-coupled-enhanced-multiphase-mixing-to-treat-dye-wastewater-and-cfd-flow-field-simulation
#26
JOURNAL ARTICLE
Jinshan Tang, Zhiliang Cheng, Xuan Zhang, Jinyu Sun, Zhaoqiang Liu, Hao Zhang, Shengmei Tan, Facheng Qiu
In this study, ozone catalysts (hydrogenation-modified red mud, HM-RM) successfully prepared by hydrogenation-modification of industrial hazardous solid waste red mud (RM) as a raw material in accordance with the viewpoint of treating waste with waste and using waste. Meanwhile, as for the common phenomenon of membrane fouling, uneven distribution of multiphase solid catalysts and ozone in liquids, the addition of ultrasound can not only disperse materials, but also play a role in online cleaning of ceramic membranes and catalysts...
March 3, 2024: Ultrasonics Sonochemistry
https://read.qxmd.com/read/38452638/anesthetic-management-of-thyroid-carcinoma-invading-the-upper-tracheal-segment-a-case-report
#27
Yuyan Ding, Lianbing Gu, Lijun Wang, Lingxi Xing, Yihu Zhou, Yueyi Jiang
INTRODUCTION AND IMPORTANCE: Intratracheal tumors account for approximately 0.2 % of respiratory tumors, including primary and secondary tumors. Secondary tumors of the upper trachea are most commonly derived from advanced thyroid cancer. Surgical resection is currently the general curative modality for thyroid cancer with tracheal invasion. Patients with tracheal tumors invading and protruding into the lumen may have reduced oxygen reserve capacity, leading to a shorter safe window for general anesthesia induction...
February 27, 2024: International Journal of Surgery Case Reports
https://read.qxmd.com/read/38450888/a-bioinspired-and-cost-effective-device-for-minimally-invasive-blood-sampling
#28
JOURNAL ARTICLE
Nicole Zoratto, David Klein-Cerrejon, Daniel Gao, Tino Inchiparambil, David Sachs, Zhi Luo, Jean-Christophe Leroux
Conventional venipuncture is invasive and challenging in low and middle-income countries. Conversely, point-of-care devices paired with fingersticks, although less invasive, suffer from high variability and low blood volume collection. Recently approved microsampling devices address some of these issues but remain cost-prohibitive for resource-limited settings. In this work, a cost-effective microsampling device is described for the collection of liquid blood with minimal invasiveness and sufficient volume retrieval for laboratory analyses or immediate point-of-care testing...
March 7, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38449042/supplemental-oxygen-concentrations-and-the-use-of-suction-to-mitigate-risk-of-oral-surgical-fires-using-a-laboratory-model
#29
JOURNAL ARTICLE
Alexandra R Kolar, Mark A Saxen, James E Jones, Juan F Yepes, George Eckert
Purpose: Intraoral oxygen pooling during dental sedation, especially using supplemental oxygen, is associated with an increased risk of spontaneous perioperative fire. The purpose of this in vitro study was to examine the effectiveness of intraoral suctioning for reducing oxygen pooling to safe levels during a simulated dental procedure. Methods: Phase one: Twenty trials were completed for each of the three suctioning devices: high-volume evacuation (HVE), fixed tip saliva ejector (SE), and Yankauer suction (YS)...
January 15, 2024: Pediatric Dentistry
https://read.qxmd.com/read/38444158/interaction-with-stomatin-directs-human-proton-channels-into-cholesterol-dependent-membrane-domains
#30
JOURNAL ARTICLE
Artem G Ayuyan, Vladimir V Cherny, Gustavo Chaves, Boris Musset, Fredric S Cohen, Thomas E DeCoursey
Many membrane proteins are modulated by cholesterol. Here we report profound effects of cholesterol depletion and restoration on the human voltage gated proton channel, hHV 1, in excised patches, but with negligible effects in the whole-cell configuration. Despite the presence of a putative cholesterol binding site, a CARC motif in hHV 1, mutation of this motif did not affect cholesterol effects. The murine HV 1 lacks a CARC sequence but displays similar cholesterol effects. These results argue against a direct effect of cholesterol on the HV 1 protein...
March 4, 2024: Biophysical Journal
https://read.qxmd.com/read/38442742/treatment-of-polluted-river-water-using-potential-bioflocculant-produced-by-klebsiella-pneumonia-ukd24
#31
JOURNAL ARTICLE
R S Kaarmukhilnilavan, J W C Wong, K Murugesan
Chemically enhanced primary treatment (CEPT) is a rapid wastewater treatment process involving treating wastewater with two chemical-aided processes, coagulation, and flocculation. In the present study, a natural extracellular polymeric substance flocculant (EPSBF) produced by Klebsiella pneumonia UKD24, a bacterium isolated from the sewage treatment plant, and a synthetic polyacrylamide anionic polymer flocculant (PAM) were evaluated to treat polluted river water. The synthetic PAM showed immediate turbidity reduction after agitation, while the EPSBF expressed a rapid decrease in optical density...
March 5, 2024: Environmental Technology
https://read.qxmd.com/read/38439984/effects-of-water-nitrogen-coupling-on-water-and-salt-environment-and-root-distribution-in-suaeda-salsa
#32
JOURNAL ARTICLE
Qiang Xu, Hongguang Liu, Mingsi Li, Gong Ping, Pengfei Li, Yibin Xu, Qian Zhang, Hanji Xia
Understanding the spatial distribution of crop roots is crucial for effectively managing crop water and fertilizer. We investigate the effects of water-nitrogen coupling on the water-salt environment and root distribution in the root zone of S. salsa . Three irrigation levels were established, calculated according to 0.35 (W1), 0.50 (W2), and 0.65 (W3) of local ET0 . The three nitrogen levels were 150 (N1), 250 (N2), and 350 (N3) kg·hm-2 in a complete combination design. With the augmentation of irrigation water and nitrogen application, the total root weight density of the root system of Suaeda salsa increased from 17...
2024: Frontiers in Plant Science
https://read.qxmd.com/read/38437087/real-time-seamless-multi-projector-displays-on-deformable-surfaces
#33
JOURNAL ARTICLE
Muhammad Twaha Ibrahim, M Gopi, Aditi Majumder
Prior works on multi-projector displays have focused primarily on static rigid objects, some focusing on dynamic rigid objects. However, works on projection based displays on deformable dynamic objects have focused only on small scale single projector displays. Tracking a deformable dynamic surface and updating projections precisely in real time on it is a significantly challenging task, even for a single projector system. In this paper, we present the first end-to-end solution for achieving a real-time, seamless display on deformable surfaces using mutliple unsychronized projectors without requiring any prior knowledge of the surface or device parameters...
March 4, 2024: IEEE Transactions on Visualization and Computer Graphics
https://read.qxmd.com/read/38436753/delayed-diagnosis-in-hirschsprung-disease
#34
JOURNAL ARTICLE
Alessio Pini Prato, M Erculiani, M L Novi, M Caraccia, A Grandi, S Casella, L Giacometti, G Montobbio, G Mottadelli
INTRODUCTION: Diagnostic delay in Hirschsprung disease is uncommon. Different definitions have been proposed but that of a diagnosis achieved after 12 months of age seems to be the most reliable and resorted to. Some authors reported a worse outcome in case of delay. Our study aims at providing the most relevant features of a series of patients who received a delayed diagnosis of Hirschsprung disease. MATERIALS AND METHODS: All consecutive patients admitted to our Center with a delayed diagnosis of Hirschsprung diseases between January 2017 and July 2023 have been retrospectively enrolled...
March 4, 2024: Pediatric Surgery International
https://read.qxmd.com/read/38430305/comparison-of-traditional-and-suctioning-ureteral-access-sheath-during-retrograde-intrarenal-surgery-in-the-treatment-of-renal-calculi
#35
JOURNAL ARTICLE
Lujia Wang, Zijian Zhou, Peng Gao, Yuanyuan Yang, Qiang Ding, Zhong Wu
PURPOSE: This study aims to compare the efficiency and clinical outcomes between the suctioning ureteral access sheath (UAS) group and the traditional UAS group during retrograde intrarenal surgery (RIRS) for kidney stones and explore the impact of suctioning UAS on postoperative infectious complications. METHODS: We retrospectively reviewed the clinical data of 162 patients with kidney stones who underwent RIRS with a traditional UAS (n = 74) or a suctioning UAS (n = 71) between March 2021 and May 2023...
March 2, 2024: Langenbeck's Archives of Surgery
https://read.qxmd.com/read/38430145/analysis-of-the-positive-effects-of-optimizing-the-sequence-of-attracting-and-suctioning-below-the-glottis-on-the-incidence-of-ventilator-associated-pneumonia
#36
JOURNAL ARTICLE
Honghong Yang, Ling Wang, Chaochao Liu, Yanqing Bai, Rong Zhang
OBJECTIVE: This study aimed to investigate the impact of optimizing the subglottic suction and aspiration sequence on ventilator-associated pneumonia (VAP) incidence. METHODS: A total of 108 patients undergoing transcatheter orotracheal intubation with subglottic secretion drainage (SSD) and mechanical ventilation were selected from the Department of Critical Care Medicine in our hospital between September 2021 and March 2023. The patients were randomly assigned to either the observation group or the control group (54 cases each) using a random number method...
March 1, 2024: Alternative Therapies in Health and Medicine
https://read.qxmd.com/read/38428124/back-to-the-water-tongue-morphology-associated-to-contrasting-lifestyles-in-two-andean-frogs-of-the-genus-telmatobius
#37
JOURNAL ARTICLE
J Sebastián Barrionuevo, Franco Pucci Alcaide
The evolution of the tongue in tetrapods is associated with feeding in the terrestrial environment. This study analyzes the tongue morphology of two closely related frog species, Telmatobius oxycephalus and T. rubigo, which exhibit contrasting feeding mechanisms. Telmatobius oxycephalus, a semi-aquatic species, relies on its tongue to capture terrestrial prey whereas T. rubigo, a secondarily aquatic species, uses suction feeding not involving the tongue. Through anatomical, histological and scanning electron microscopy analyses, we revealed remarkable differences in tongue morphology between these species...
February 20, 2024: Zoology: Analysis of Complex Systems, ZACS
https://read.qxmd.com/read/38425613/the-efficacy-of-daily-administration-of-nebulized-heparin-on-the-prevention-of-endotracheal-tube-blockage-in-patients-with-pneumonia
#38
JOURNAL ARTICLE
Seyed Hamid Borsi, Maryam Haddadzadeh Shoushtari, Hanieh Raji, Hooshmand Hosseini Nezhad, Mehrdad Dargahi Mal-Amir
OBJECTIVE: Nosocomial infections pose a significant public health concern, impacting over 100 million people worldwide annually. Within this research, we investigated heparin nebulization through the endotracheal tube and its effect on preventing blockage due to clots and mucus plugs compared to normal saline. METHODS: A double-blind clinical experiment was done on a cohort of 40 pneumonia patients who were intubated and hospitalized in the intensive care unit (ICU) at Imam Khomeini Hospital in Ahvaz, Iran...
January 2024: Curēus
https://read.qxmd.com/read/38424626/field-evaluation-of-an-automated-mosquito-surveillance-system-which-classifies-aedes-and-culex-mosquitoes-by-genus-and-sex
#39
JOURNAL ARTICLE
María I González-Pérez, Bastian Faulhaber, Carles Aranda, Mark Williams, Pancraç Villalonga, Manuel Silva, Hugo Costa Osório, Joao Encarnaçao, Sandra Talavera, Núria Busquets
BACKGROUND: Mosquito-borne diseases are a major concern for public and veterinary health authorities, highlighting the importance of effective vector surveillance and control programs. Traditional surveillance methods are labor-intensive and do not provide high temporal resolution, which may hinder a full assessment of the risk of mosquito-borne pathogen transmission. Emerging technologies for automated remote mosquito monitoring have the potential to address these limitations; however, few studies have tested the performance of such systems in the field...
March 1, 2024: Parasites & Vectors
https://read.qxmd.com/read/38424309/sustained-physiological-stretch-induces-abdominal-skin-growth-in-pregnancy
#40
JOURNAL ARTICLE
David Sachs, Raphael Jakob, Bettina Thumm, Michael Bajka, Alexander E Ehret, Edoardo Mazza
Supraphysiological stretches are exploited in skin expanders to induce tissue growth for autologous implants. As pregnancy is associated with large levels of sustained stretch, we investigated whether skin growth occurs in pregnancy. Therefore, we combined a mechanical model of skin and the observations from suction experiments on several body locations of five pregnant women at different gestational ages. The measurements show a continuous increase in stiffness, with the largest change observed during the last trimester...
February 29, 2024: Annals of Biomedical Engineering
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