期刊文献+
共找到23,437篇文章
< 1 2 250 >
每页显示 20 50 100
Transplantation of human induced pluripotent stem cell derived keratinocytes accelerates deep second-degree burn wound healing 被引量:1
1
作者 Li-Jun Wu Wei Lin +5 位作者 Jian-Jiang Liu Wei-Xin Chen Wen-Jun He Yuan Shi Xiao Liu Ke Li 《World Journal of Stem Cells》 SCIE 2023年第7期713-733,共21页
BACKGROUND Current evidence shows that human induced pluripotent stem cells(hiPSCs)can effectively differentiate into keratinocytes(KCs),but its effect on skin burn healing has not been reported.AIM To observe the eff... BACKGROUND Current evidence shows that human induced pluripotent stem cells(hiPSCs)can effectively differentiate into keratinocytes(KCs),but its effect on skin burn healing has not been reported.AIM To observe the effects of hiPSCs-derived KCs transplantation on skin burn healing in mice and to preliminarily reveal the underlying mechanisms.METHODS An analysis of differentially expressed genes in burn wounds based on GEO datasets GSE140926,and GSE27186 was established.A differentiation medium containing retinoic acid and bone morphogenetic protein 4 was applied to induce hiPSCs to differentiate into KCs.The expression of KCs marker proteins was detected using immunofluorescence staining.A model of a C57BL/6 mouse with deep cutaneous second-degree burn was created,and then phosphate buffered saline(PBS),hiPSCs-KCs,or hiPSCs-KCs with knockdown of COL7A1 were injected around the wound surface.The wound healing,re-epithelialization,engraftment of hiPSCs-KCs into wounds,proinflammatory factor level,and the NF-κB pathway proteins were assessed by hematoxylin-eosin staining,carboxifluorescein diacetate succinimidyl ester(CFSE)fluorescence staining,enzyme linked immunosorbent assay,and Western blotting on days 3,7,and 14 after the injection,respectively.Moreover,the effects of COL7A1 knockdown on the proliferation and migration of hiPSCs-KCs were confirmed by immunohistochemistry,EdU,Transwell,and damage repair assays.RESULTS HiPSCs-KCs could express the hallmark proteins of KCs.COL7A1 was down-regulated in burn wound tissues and highly expressed in hiPSCs-KCs.Transplantation of hiPSCs-KCs into mice with burn wounds resulted in a significant decrease in wound area,an increase in wound re-epithelialization,a decrease in proinflammatory factors content,and an inhibition of NF-κB pathway activation compared to the PBS group.The in vitro assay showed that COL7A1 knockdown could rescue the inhibition of hiPSCs-KCs proliferation and migration,providing further evidence that COL7A1 speeds up burn wound healing by limiting cell proliferation and migration.CONCLUSION In deep,second-degree burn wounds,COL7A1 can promote KC proliferation and migration while also suppressing the inflammatory response. 展开更多
关键词 Induced pluripotent stem cell KERATINOCYTES Cell transplantation burn wound healing COL7A1
下载PDF
Significance of D-dimer assay in the diagnosis of acute pulmonary embolism after deep second-degree burn in rabbits
2
作者 Zhihui Hou Lingfeng Wang Mingjuan Gu 《Discussion of Clinical Cases》 2018年第3期23-27,共5页
Objective: To explore the significance of D-dimer assay in the diagnosis of acute pulmonary embolism (APE) after deep second-degree burn by detecting the changes of plasma D-dimer in rabbits with deep second-degree bu... Objective: To explore the significance of D-dimer assay in the diagnosis of acute pulmonary embolism (APE) after deep second-degree burn by detecting the changes of plasma D-dimer in rabbits with deep second-degree burn and in different phases of burn with concomitant pulmonary embolism. Methods: 48 healthy male or female Chinese white rabbits, were randomly divided into: control group, burn group, burn shock group, burn shock + pulmonary embolism group, burn infection group and burn infection + pulmonary embolism group, with 8 rabbits in each group. By use of the ELISA method, the plasma D-dimer was determined on 1 d, 3 d, 5 d, 7 d, 14 d and 21 d after modeling in the burn group and the control group, and the plasma D-dimer in other groups was detected in 30 min, 1 h, 3 h, 6 h, 24 h after modeling. Results: The expression of D-dimer in the burn group was higher than that in the control group on 1 d, 3 d, 5 d and 7 d (p < .05). There were significant differences in the expression of D-dimer in the burn shock + pulmonary embolism group in comparison to the burn shock group (p < .05). There were also some significant differences in the expression of D-dimer in the burn infection+ pulmonary embolism group in comparison with the burn shock + pulmonary embolism group (p < .05). Conclusions: There were some differences in the expression of D-dimer in each group. D-dimer can be used as one of diagnostic indexes for deep second-degree burn with pulmonary embolism. 展开更多
关键词 D-DIMER PULMONARY EMBOLISM burn
下载PDF
Injectable chitosan hydrogels loaded with antioxidant agent as first-aid dressings for second-degree burn wounds 被引量:2
3
作者 REN Hui ZHANG Zhen +3 位作者 LU KaiLun SHEN YuanYuan HE ChaoLiang CHEN XueSi 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2024年第3期891-901,共11页
Burn wounds are destructive skin traumas typically of irregular shape and large area. Prone to infection, they require frequent dressing replacement, and painless removal of dressings from burn wounds remains a major ... Burn wounds are destructive skin traumas typically of irregular shape and large area. Prone to infection, they require frequent dressing replacement, and painless removal of dressings from burn wounds remains a major challenge. This study focuses on the dynamic characteristics and treatment difficulty of burn wounds. Hydrogel dressings based on glycol chitosan and propionaldehyde-or benzaldehyde-terminated 4-arm poly(ethylene glycol) were designed on the basis of Schiff base cross-linking networks. The hydrogels exhibited shape-adaptability, self-healing and fast-degradation properties, which makes these hydrogels suitable for burn wounds. Salvianolic acid B(SaB)-loaded hydrogel exhibited good antioxidant properties in vitro. In a rat model of deep second-degree burn wounds, the SaB-loaded hydrogel could quickly reduce wound temperature, regulate wound oxidant microenvironment, promote angiogenesis, and accelerate wound healing. Thus, the drug-loaded hydrogel shows significant potential as a first-aid dressing for treatment of burn wounds. 展开更多
关键词 hydrogel dressing fast-degradation shape-adaptability stress relaxation burn wound treatment
原文传递
Hydrogels for the management of second-degree burns:currently available options and future promise 被引量:4
4
作者 Katherine A.Cook Edith Martinez-Lozano +3 位作者 Robert Sheridan Edward K.Rodriguez Ara Nazarian Mark W.Grinstaff 《Burns & Trauma》 SCIE 2022年第1期71-87,共17页
Burn wounds result from exposure to hot liquids,chemicals,fire,electric discharge or radiation.Wound severity ranges from first-degree injury,which is superficial,to fourth-degree injury,which exposes bone,tendons and... Burn wounds result from exposure to hot liquids,chemicals,fire,electric discharge or radiation.Wound severity ranges from first-degree injury,which is superficial,to fourth-degree injury,which exposes bone,tendons and muscles.Rapid assessment of burn depth and accurate wound management in the outpatient setting is critical to prevent injury progression into deeper layers of the dermis.Injury progression is of particular pertinence to second-degree burns,which are the most common form of thermal burn.As our understanding of wound healing advances,treatment options and technologies for second-degree burn management also evolve.Polymeric hydrogels are a class of burn wound dressings that adhere to tissue,absorb wound exudate,protect from the environment,can be transparent facilitating serial wound evaluation and,in some cases,enable facile removal for dressing changes.This review briefly describes the burn level classification and common,commercially available dressings used to treat second-degree burns,and then focuses on new polymeric hydrogel burn dressings under preclinical development analyzing their design,structure and performance.The review presents the follow key learning points:(1)introduction to the integument system and the wound-healing process;(2)classification of burns according to severity and clinical appearance;(3)available dressings currently used for second-degree burns;(4)introduction to hydrogels and their preparation and characterization techniques;and(5)pre-clinical hydrogel burn wound dressings currently being developed. 展开更多
关键词 burn Wound Hydrogel DRESSING second-degree
原文传递
Feasibility of a finger prick-based self-testing kit in first- and second-degree relatives of children with coeliac disease
5
作者 Judith Pichler Matthias Zilbauer +3 位作者 Franco Torrente Robert Heuschkel Alan Phillips Camilla Salvestrini 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第14期1840-1843,共4页
AIM:To assess feasibility of a finger prick-based kit as method for self-testing of first and second-degree relatives of coeliac disease (CD) patients. METHODS:A total number of 379 subjects were invited to participat... AIM:To assess feasibility of a finger prick-based kit as method for self-testing of first and second-degree relatives of coeliac disease (CD) patients. METHODS:A total number of 379 subjects were invited to participate in this study,consisting of 197 first- degree and 182 second-degree relatives of CD patients. The self-testing kit (BiocardTM) was sent out with included instructions for use. Completed tests were sent back to the study coordinator for assessment. RESULTS:One hundred and ninety-six invited relatives carried out the BiocardTM test at home. Amongst these,70% were children. In 97% of the cases the test was performed correctly. Three tests revealed a positive result,all of which were later confirmed by serology and histology as coeliac disease.CONCLUSION:Our study indicates that BiocardTM test is a reliable,easy to use and well-accepted tool for home testing of first- and second-degree relatives of CD patients. 展开更多
关键词 Coeliac disease Self-testing kit second-degree relatives
下载PDF
Integration of Multiple Spectral Data via a Logistic Regression Algorithm for Detection of Crop Residue Burned Areas:A Case Study of Songnen Plain,Northeast China
6
作者 ZHANG Sumei ZHANG Yuan ZHAO Hongmei 《Chinese Geographical Science》 SCIE CSCD 2024年第3期548-563,共16页
The burning of crop residues in fields is a significant global biomass burning activity which is a key element of the terrestrial carbon cycle,and an important source of atmospheric trace gasses and aerosols.Accurate ... The burning of crop residues in fields is a significant global biomass burning activity which is a key element of the terrestrial carbon cycle,and an important source of atmospheric trace gasses and aerosols.Accurate estimation of cropland burned area is both crucial and challenging,especially for the small and fragmented burned scars in China.Here we developed an automated burned area mapping algorithm that was implemented using Sentinel-2 Multi Spectral Instrument(MSI)data and its effectiveness was tested taking Songnen Plain,Northeast China as a case using satellite image of 2020.We employed a logistic regression method for integrating multiple spectral data into a synthetic indicator,and compared the results with manually interpreted burned area reference maps and the Moderate-Resolution Imaging Spectroradiometer(MODIS)MCD64A1 burned area product.The overall accuracy of the single variable logistic regression was 77.38%to 86.90%and 73.47%to 97.14%for the 52TCQ and 51TYM cases,respectively.In comparison,the accuracy of the burned area map was improved to 87.14%and 98.33%for the 52TCQ and 51TYM cases,respectively by multiple variable logistic regression of Sentind-2 images.The balance of omission error and commission error was also improved.The integration of multiple spectral data combined with a logistic regression method proves to be effective for burned area detection,offering a highly automated process with an automatic threshold determination mechanism.This method exhibits excellent extensibility and flexibility taking the image tile as the operating unit.It is suitable for burned area detection at a regional scale and can also be implemented with other satellite data. 展开更多
关键词 crop residue burning burned area Sentinel-2 Multi Spectral Instrument(MSI) logistic regression Songnen Plain China
下载PDF
Community Knowledge and Attitude about Burns First Aid (BFA) in Jazan, Saudi Arabia
7
作者 Md. Mazharul Hoque Mohamed E. Moukhyer +9 位作者 Nizar A. Khamjan Bahja Al Siddig Elsie Maguen Shane Alam Abdulrahman Ibrahim Ali Hakami Siraj Yahya Mohammed Mobarki Bandar Hassan Sulaiman Ghazwani Ayman Abdulrhman Alhathiq Lamyaa El Hassan Aziza Mukhayer 《Journal of Biosciences and Medicines》 2024年第4期135-148,共14页
Introduction and Significance: Burn injury (BI) is a considerable health issue which is responsible for around 300,000 deaths and affecting about 11 million people every year worldwide. In Saudi Arabia, the prevalence... Introduction and Significance: Burn injury (BI) is a considerable health issue which is responsible for around 300,000 deaths and affecting about 11 million people every year worldwide. In Saudi Arabia, the prevalence of BIs array from 112 to 518 per 100,000 per year. The appropriate awareness of performing first aid could facilitate to improve the outcomes of burns. Purpose and Objectives: To appraise the community that acknowledges burns, first aid, and associated factors among the community population in Jazan City, Saudi Arabia. The paper aims to identify limitations to encourage additional research and persuade legislators to develop improved burn-injury care recommendations and training programs. Materials and Methods: An observational-based sample survey was conducted among the people who live in Jazan City aging 13 years or more, during April 5 to May 5, 2023. Data collection was done by a validated online self-administrated questionnaire sent randomly to community members in different parts of Jazan City via social media platforms. Collected data were coded and cleaned by an excel program, and finally exported on SPSS 26.0 software. The variables were analyzed using descriptive statistics like frequencies and percentages. Also, the Chi-square test was used to investigate the relation between different variables, with a significance value of P Results: This study included 243 participants (about 62%) among them were mostly male participants (151) having a university degree. The majority of participants 75% did not take any form of BFA training in the past. This study shows that 69.9% of the participants have inadequate awareness, despite 72% having a constructive attitude towards burn first aid. Previous burn-related first aid training was significantly associated with participants’ knowledge of BFA at a p-value less than 0.05. Conclusion: This study indicates a high frequency of Jazan population having inadequate knowledge of burn first aid despite the high prevalence of a favorable attitude. There is a need to develop an effective nationwide burn prevention program and early burn first aid treatment in Saudi Arabia and promote a consistent guideline for burn first aid. 展开更多
关键词 burn Injury (BI) burns First Aid Knowledge First Aid Training Jazan City
下载PDF
Alkali burn injury model of meibomian gland dysfunction in mice
8
作者 Yong Li Ya-Qiong Yang +6 位作者 Yong Lin Ke Yan Yu-Fei Lyu Zhao-Qiang Zhang Cai-Hong Huang Jiao-Yue Hu Zu-Guo Liu 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第12期2158-2166,共9页
AIM:To establish a stable,short-time,low-cost and reliable murine model of meibomian gland dysfunction(MGD).METHODS:A filter paper sheet soaked in 1.0 mol/L sodium hydroxide(NaOH)solution was used to touch the eyelid ... AIM:To establish a stable,short-time,low-cost and reliable murine model of meibomian gland dysfunction(MGD).METHODS:A filter paper sheet soaked in 1.0 mol/L sodium hydroxide(NaOH)solution was used to touch the eyelid margin of C57BL/6J mice for 10s to establish the model.The other eye was left untreated as a control group.Eyelid margin morphological changes and the meibomian glands(MGs)were observed by slit lamp microscopy on days 5 and 10 post-burn.Hematoxylin-eosin(HE)staining and Oil red O staining were adopted in detecting the changes in MGs morphology and lipid deposition.Real-time polymerase chain reaction,Western blot,immunofluorescence staining and immunohistochemical staining were used to detect interleukin(IL)-6,IL-1β,IL-18,tumor necroses factor(TNF)-α,interferon(IFN)-γ,nicotinamide adenine dinucleotide phosphate(NADPH)oxidase 4(NOX4),3-nitroturosine(3-NT),4-hydroxynonenal(4-HNE)and cytokeratin 10(K10)expression changes in MGs.RESULTS:MGs showed plugging of orifice,glandular deficiency,abnormal acinar morphology,ductal dilatation,and lipid deposition after alkali burn.The expressions of IL-6,IL-18,IL-1β,IFN-γ,and TNF-αindicators of inflammation and oxidative stress in MGs tissues were significantly increased.Abnormal keratinization increased in the MG duct.CONCLUSION:A murine model of MGD is established by alkali burn of the eyelid margin that matches the clinical presentation of MGD providing a stable,short-time,lowcost,and reliable MGD model.The new method suggests efficient avenues for future research. 展开更多
关键词 alkali burn meibomian gland dysfunction animal model oxidative stress
下载PDF
Analysis of the Cicatricial Acceleration Method (MAC®) in Skin Repair in Wistar Rattus norvegicus with Induced Chemical Burns
9
作者 Marcus Vinicius de Mello Pinto Sandroval Francisco Torres +9 位作者 Aline Ronis Sampaio Karin Yuri Fernandez Iturra Miriam Viviane Baron Patricia Froes Carlos Ruiz da Silva Daiane Paza Maria Elena Silva Alvarez Josefa Jeanette Ugalde Juliano Tibola Esteban Fortuny 《Journal of Biosciences and Medicines》 2024年第9期204-214,共11页
Introduction: The cicatricial acceleration method (MAC®) promotes photobiological effects of an anti-inflammatory and healing nature. Its therapeutic radiation is emitted, producing photobiostimulant effects that... Introduction: The cicatricial acceleration method (MAC®) promotes photobiological effects of an anti-inflammatory and healing nature. Its therapeutic radiation is emitted, producing photobiostimulant effects that result in rapid tissue repair and better tissue quality. The treatment of burns has always been a challenge, which involves both performing surgery and controlling and guiding scar regeneration, avoiding possible morbidities. Objective: To evaluate the effects of applying the MAC methodology with an AlGa (aluminum, gallium arsenide) laser on the time and quality of tissue repair in the skin of rats after induced chemical burns. Method: 22 adult male rats were subjected to a second-degree chemical burn on the back using 50% trichloroacetic acid. After the burns, the animals were randomly separated into 2 groups: control and experimental. The control group (G1) received placebo laser therapy and the laser group (G2) underwent laser irradiation with an energy density of 100 J/cm2. Histological analysis and macroscopic evaluation were carried out by means of the paper template method. Results: Group G1 showed (53%) of the necrosis area and group G2 showed (11%) necrosis area. Conclusion: The cicatricial acceleration method (MAC®) favored the repair of wounds caused by a 2nd-degree chemical burn, optimizing time and improving quality. 展开更多
关键词 Chemical burn HEALING SCARRING Cicatricial Acceleration Method (MAC®) Tissue Repair
下载PDF
Multidisciplinary treatment of molten aluminum combined burn:An unusual case report
10
作者 Shengzhou Shan Yinbo Peng +4 位作者 Liqing Gong Zhigang Mao Weirong Yu Tao Ni Peng Xu 《Chinese Journal of Plastic and Reconstructive Surgery》 2024年第3期135-138,共4页
Molten aluminum is among the most common causes of burns in the metal industry.However,only few reports are available on molten aluminum injuries.Herein,we report an unusual case of molten aluminum burn.The patient ha... Molten aluminum is among the most common causes of burns in the metal industry.However,only few reports are available on molten aluminum injuries.Herein,we report an unusual case of molten aluminum burn.The patient had burns not only on the body surface but also in the respiratory tract and esophagus,adding to the difficulty of treatment.Multidisciplinary consultation and cooperation led to the development of a treatment plan for the patient,which included tracheotomy,respiratory management,endoscopic therapy,infection control,and psychological support.To our knowledge,this is the first report of molten aluminum-induced burns involving the face,neck,respiratory tract,esophagus,and eyes.We also describe our experience with multidisciplinary treatment for the management of molten aluminum burns. 展开更多
关键词 Molten aluminum Combined burn Multidisciplinary treatment
下载PDF
Nomogram for predicting the risk of anxiety and depression in patients with non-mild burns
11
作者 Jie Chen Jian-Fei Zhang +7 位作者 Xia Xiao Yu-Jun Tang He-Jin Huang Wen-Wen Xi Li-Na Liu Zheng-Zhou Shen Jian-Hua Tan Feng Yang 《World Journal of Psychiatry》 SCIE 2024年第8期1233-1243,共11页
BACKGROUND Post-burn anxiety and depression affect considerably the quality of life and recovery of patients;however,limited research has demonstrated risk factors associated with the development of these conditions.A... BACKGROUND Post-burn anxiety and depression affect considerably the quality of life and recovery of patients;however,limited research has demonstrated risk factors associated with the development of these conditions.AIM To predict the risk of developing post-burn anxiety and depression in patients with non-mild burns using a nomogram model.METHODS We enrolled 675 patients with burns who were admitted to The Second Affiliated Hospital,Hengyang Medical School,University of South China between January 2019 and January 2023 and met the inclusion criteria.These patients were randomly divided into development(n=450)and validation(n=225)sets in a 2:1 ratio.Univariate and multivariate logistic regression analyses were conducted to identify the risk factors associated with post-burn anxiety and depression dia-gnoses,and a nomogram model was constructed.RESULTS Female sex,age<33 years,unmarried status,burn area≥30%,and burns on the head,face,and neck were independent risk factors for developing post-burn anxiety and depression in patients with non-mild burns.The nomogram model demonstrated predictive accuracies of 0.937 and 0.984 for anxiety and 0.884 and 0.923 for depression in the development and validation sets,respectively,and good predictive per-formance.Calibration and decision curve analyses confirmed the clinical utility of the nomogram.CONCLUSION The nomogram model predicted the risk of post-burn anxiety and depression in patients with non-mild burns,facilitating the early identification of high-risk patients for intervention and treatment. 展开更多
关键词 burn Post-burn anxiety Depression Risk prediction Nomogram model
下载PDF
Delayed Grafting as a Valid Technique in Burn Management: Experience from a Burn Unit in Oman
12
作者 Taif Alsafy Joe Jacob +10 位作者 Anish Thadathil Elias Ahmed Salah El Din Salim Mohammed Ghawas Majid Tariq Saud Albusaidi Ahmed Al Jabri Al Anood Al Hadhrami Mutazz Obeid Al Khaldi Moath Abdelhamid Shummo Karim Mohamed Haridi Aml Eid Saleh Said Al-Busaidi 《Modern Plastic Surgery》 2024年第1期9-14,共6页
Background: Early excision and grafting has been the preferred method of managing major burns around the world since 1970. Considering the advances in health care and the development of new antibiotics over the past 5... Background: Early excision and grafting has been the preferred method of managing major burns around the world since 1970. Considering the advances in health care and the development of new antibiotics over the past 50 years, delayed grafting as a technique for the management of burns over 15%-20% of total body surface area (TBSA) could have comparable results to that of early excision. This study aims to highlight the outcomes of practicing delayed grafting in burn patients. Methods: A case series analysis was performed of 51 patients who were admitted to the burns unit in Sultan Qaboos Hospital Salalah with over 20% TBSA between January 2014 and December 2019. The patients received prophylactic antibiotics and silver sulphadiazine dressing until the burn eschar had completely separated, followed by grafting. Results: Two patients were lost during the entire duration of the study. The mortality rate was comparable to that of early excision, while the rate of hypertrophic scarring was lower than the range reported by other studies. Conclusion: In the management of patients with over 20% TBSA, delayed grafting after complete separation of eschar is still a valid technique. 展开更多
关键词 burnS burn Units burn Management Delayed Grafting Major burns Treatment Efficacy
下载PDF
Nonlinear dynamics of the reversed shear Alfvén eigenmode in burning plasmas
13
作者 王涛 魏士朝 +3 位作者 Sergio BRIGUGLIO Gregorio VLAD Fulvio ZONCA 仇志勇 《Plasma Science and Technology》 SCIE EI CAS CSCD 2024年第5期1-16,共16页
In a tokamak fusion reactor operated at steady state,the equilibrium magnetic field is likely to have reversed shear in the core region,as the noninductive bootstrap current profile generally peaks off-axis.The revers... In a tokamak fusion reactor operated at steady state,the equilibrium magnetic field is likely to have reversed shear in the core region,as the noninductive bootstrap current profile generally peaks off-axis.The reversed shear Alfvén eigenmode(RSAE)as a unique branch of the shear Alfvén wave in this equilibrium,can exist with a broad spectrum in wavenumber and frequency,and be resonantly driven unstable by energetic particles(EP).After briefly discussing the RSAE linear properties in burning plasma condition,we review several key topics of the nonlinear dynamics for the RSAE through both wave-EP resonance and wave-wave coupling channels,and illustrate their potentially important role in reactor-scale fusion plasmas.By means of simplified hybrid MHD-kinetic simulations,the RSAEs are shown to have typically broad phase space resonance structure with both circulating and trapped EP,as results of weak/vanishing magnetic shear and relatively low frequency.Through the route of wave-EP nonlinearity,the dominant saturation mechanism is mainly due to the transported resonant EP radially decoupling with the localized RSAE mode structure,and the resultant EP transport generally has a convective feature.The saturated RSAEs also undergo various nonlinear couplings with other collective oscillations.Two typical routes as parametric decay and modulational instability are studied using nonlinear gyrokinetic theory,and applied to the scenario of spontaneous excitation by a finite amplitude pump RSAE.Multiple RSAEs could naturally couple and induce the spectral energy cascade into a low frequency Alfvénic mode,which may effectively transfer the EP energy to fuel ions via collisionless Landau damping.Moreover,zero frequency zonal field structure could be spontaneously excited by modulation of the pump RSAE envelope,and may also lead to saturation of the pump RSAE by both scattering into stable domain and local distortion of the continuum structure. 展开更多
关键词 reversed shear Alfvén eigenmode energetic particle nonlinear gyrokinetic theory saturation burning plasma
下载PDF
Infection control and prevention in burn victims:The role of nurses
14
作者 Dorcas Ayomikun ARIYO Olaolorunpo OLORUNFEMI 《Journal of Integrative Nursing》 2024年第2期136-141,共6页
Burn injury is a major public health concern,with an estimated 180,000 deaths each year associated with burn-related infections.The majority of these occur in low-and middle-income countries,and almost two-thirds occu... Burn injury is a major public health concern,with an estimated 180,000 deaths each year associated with burn-related infections.The majority of these occur in low-and middle-income countries,and almost two-thirds occur in the World Health Organization African and South-East Asia Regions.There is a risk of an escalation of burn injury site infections if nurses who are directly involved in burn care do not develop a mechanism to mitigate this risk in the coming years.Hence,this study aims at explaining what burn injuries are and how nurses can prevent the occurrence of infection among burn victims.This review analyzed published studies using keywords such as burn injury,infection in burn patients,and nurses’involvement in infection prevention and control(IPC)on search engines such as PubMed,Science Direct,and Google Scholar.The literature was retrieved and reviewed for eligibility to capture just the variables indicated in this seminar objective;the date range chosen in the literature search was from 2015 to 2023.The study found that many patients die from burn injuries as a result of exposure to infection and most nurses are not adequately informed about infection control.The study also found that nurses’responsibilities include proper hand hygiene,wound care,the use of personal protective equipment,antibiotic medication,cleaning the patient’s surroundings,and preventing patient cross-contamination.Burn injuries pose a significant risk to patients,necessitating infection control and prevention.Therefore,nurses in burn units should be informed on IPC practices and also educate patients,families,and coworkers on their importance. 展开更多
关键词 burn injury CONTROL holistic nursing care infection prevention nurses PRACTICES
下载PDF
Angioinvasive mucormycosis in burn intensive care units:A case report and review of literature
15
作者 Atul Parashar Chandra Singh 《World Journal of Critical Care Medicine》 2024年第1期76-84,共9页
BACKGROUND Mucormycosis is a rare,rapidly progressive and often fatal fungal infection.The rarity of the condition lends itself to unfamiliarity,delayed treatment,and poor outcomes.Diagnosis of fungal infections early... BACKGROUND Mucormycosis is a rare,rapidly progressive and often fatal fungal infection.The rarity of the condition lends itself to unfamiliarity,delayed treatment,and poor outcomes.Diagnosis of fungal infections early enough to enable appropriate treatment occurs in less than half of affected patients.CASE SUMMARY An 11-year-old girl with a history of 15%total body surface area scald burns involving both lower limbs progressed to develop angioinvasive mucormycosis.This further led to a thrombosis of the right external iliac artery and vein and rapidly progressive necrosis of surrounding soft tissues.She also had dextrocardia and patent foramen ovale.A right hip disarticulation and serial aggressive debridements were performed but she went on to develop systemic sepsis with multisystem involvement and succumbed to the infection.Pathology revealed mucor species with extensive vascular invasion.CONCLUSION This case highlights the importance of maintaining vigilance for mycotic infections and acting appropriately when there are signs of fulminant wound infection. 展开更多
关键词 Angioinvasiveness MUCORMYCOSIS burn sepsis Femoral artery thrombosis Case report
下载PDF
Humic Acid Effects on Reducing Corn Leaf Burn Caused by Foliar Spray of Urea-Ammonium Nitrate at Different Humic Acid/Urea-Ammonium Nitrate Ratios
16
作者 Xinhua Yin 《Open Journal of Soil Science》 2024年第3期180-189,共10页
Technologies for reducing corn leaf burn caused by foliar spray of urea-ammonium nitrate (UAN) during the early growing season are limited. A field experiment was carried out to evaluate the effects of humic acid on c... Technologies for reducing corn leaf burn caused by foliar spray of urea-ammonium nitrate (UAN) during the early growing season are limited. A field experiment was carried out to evaluate the effects of humic acid on corn leaf burn caused by foliar spray of undiluted UAN solution on corn canopy at Jackson, TN in 2018. Thirteen treatments of the mixtures of UAN and humic acid were evaluated at V6 of corn with different UAN application rates and different UAN/humic acid ratios. Leaf burn during 1 2, 3, 4, 5, 6, 7, and 14 days after UAN foliar spray significantly differed between with or without humic acid addition. The addition of humic acid to UAN significantly reduced leaf burn at each UAN application rate (15, 25, and 35 gal/acre). The reduction of leaf burn was enhanced as the humic acid/UAN ratio went up from 10% to 30%. Leaf burn due to foliar application of UAN became severer with higher UAN rates. The linear regression of leaf burn 14 days after application with humic acid/UAN ratio was highly significant and negative. However, the linear regression of leaf burn 14 days after application with the UAN application rate was highly significant and positive. In conclusion, adding humic acid to foliar-applied UAN is beneficial for reducing corn leaf burn during the early growing season. 展开更多
关键词 Humic Acid Urea-Ammonium Nitrate CORN Leaf burn N rate Ratio
下载PDF
Detection of Burned Areas through Spectral Indices Analysis of Sentinel-2A Satellite Images in the Abokouamékro Wildlife Reserve (Central, Côte D’Ivoire)
17
作者 Bob Kouakou Kouadio Sié Ouattara +3 位作者 Alain Clément Jean-Marc Gala Bi Zaouri Jean-Luc Kouadio Kouassi Jean-Luc Edouard Kouakou N’guessan 《Open Journal of Applied Sciences》 2024年第1期205-222,共18页
In Côte d’Ivoire, the recurring and unregulated use of bushfires, which cause ecological damage, presents a pressing concern for the custodians of protected areas. This study aims to enhance our comprehension of... In Côte d’Ivoire, the recurring and unregulated use of bushfires, which cause ecological damage, presents a pressing concern for the custodians of protected areas. This study aims to enhance our comprehension of the dynamics of burnt areas within the Abokouamékro Wildlife Reserve (AWR) by employing the analysis of spectral indices derived from satellite imagery. The research methodology began with the calculation of mean indices and their corresponding spectral sub-indices, including NDVI, SAVI, NDWI, NDMI, BAI, NBR, TCW, TCG, and TCB, utilizing data from the Sentinel-2A satellite image dated January 17, 2022. Subsequently, a fuzzy classification model was applied to these various indices and sub-indices, guided by the degree of membership α, with the goal of effectively distinguishing between burned and unburned areas. Following the classification, the accuracies of the classified indices and sub-indices were validated using the coordinates of 100 data points collected within the AWR through GPS technology. The results revealed that the overall accuracy of all indices and sub-indices declines as the degree of membership α decreases from 1 to 0. Among the mean spectral indices, NDVI-mean, SAVI-mean, NDMI-mean exhibited the highest overall accuracies, achieving 97%, 95%, and 90%, respectively. These results closely mirrored those obtained by sub-indices using band 8 (NDVI-B8, SAVI-B8, and NDMI-B8), which yield respective overall accuracies of 93%, 92%, and 89%. At a degree of membership α = 1, the estimated burned areas for the most effective indices encompassed 2144.38 hectares for NDVI-mean, 1932.14 hectares for mean SAVI-mean, and 4947.13 hectares for mean NDMI-mean. A prospective approach involving the amalgamation of these three indices could have the potential to yield improved outcomes. This study could be a substantial contribution to the discrimination of bushfires in Côte d’Ivoire. 展开更多
关键词 Spectral Indices WILDFIRE burned Areas Abokouamékro Wildlife Reserve Côte D’Ivoire
下载PDF
Prediction of area burned under climatic change scenarios:A case study in the Great Xing'an Mountains boreal forest 被引量:7
18
作者 杨光 邸雪颖 +3 位作者 曾涛 舒展 王超 于宏洲 《Journal of Forestry Research》 SCIE CAS CSCD 2010年第2期213-218,I0007,共7页
Monthly projections of maximum temperature,relative humidity,precipitation,and wind speed were made based on the model of HadCM3 and the climatic change scenarios of IPCC SRES A2a and B2a for the future scenario perio... Monthly projections of maximum temperature,relative humidity,precipitation,and wind speed were made based on the model of HadCM3 and the climatic change scenarios of IPCC SRES A2a and B2a for the future scenario periods of 2010–2039(referred to as 2020s),2040–2069(referred to as 2050s),and 2070–2099(referred to as 2080s).The period 1961–1990 was chosen as the baseline period.The observed and projected weather data were downscaled using delta change methods and historical relationships between weather data,area burned,and the seasonal severity rating(SSR) code of the Canadian Fire Weather Index System were examined.The variations of area burned as influenced by climate change were assessed quantitative and qualitative for the study region,assuming that the fire regimes had the similar responses to the warming climate as during the 20th century.Our results indicated that a linear regression relationship existing between the historical area burned and the mean SSR values with regression coefficient in the significant range of 0.16 to 0.61.It was evident that the increased SSR values could result in more area burned;the area burned in the study region would have an increasing pattern during the 21st century under scenarios A2a and B2a scenarios and the area burned would be doubled.Also,the future area burned would have a strong seasonal pattern that more fires would occur in summer and autumn fire season,especially in summer.The area burned in summer fire season would increase by 1.5 times compared to that in the baseline period in 2080s under A2a scenarios. 展开更多
关键词 climatic warming forest fire area burned FORECAST
下载PDF
TI TMS320C6713 DSP板FlashBurn程序设计 被引量:6
19
作者 王凤臣 乔卫民 李庆瑞 《微计算机信息》 北大核心 2006年第07Z期170-172,共3页
分析了将程序代码写入FLASH的两种方法,并在基于TITMS320C6713的DSP系统设计中,以28F128J3A为例,讨论了用FlashBurn软件和FBTC目标组件程序烧写FLASH的具体实现过程,给出了主要程序代码。
关键词 TMS320C6713 FLASH烧写 FLASH burn软件 FBTC目标组件程序
下载PDF
Research advance in forest restoration on the burned blanks 被引量:3
20
作者 孔繁花 李秀珍 +1 位作者 赵善伦 尹海伟 《Journal of Forestry Research》 SCIE CAS CSCD 2003年第2期180-184,共5页
How to restore the destroyed forest after forest fire is a key question that man must face. This paper reviewed the research situation and history on the forest restoration burned blanks and summed up the research met... How to restore the destroyed forest after forest fire is a key question that man must face. This paper reviewed the research situation and history on the forest restoration burned blanks and summed up the research methods used into four scales: seed-bank scale, community scale, ecosystem scale and landscape scale. The new technologies such as GIS & Remote Sensing used to vegetation restoration were also summarized. The strategies and developing trend of vegetation restoration research on burned blanks were discussed. 展开更多
关键词 burned blanks Forest restoration Research advance Questions and countermeasures
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部