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Clinical outcomes of triceps reflecting anconeus pedicle and olecranon osteotomy approach for distal humerus intercondylar fractures

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World Journal of Orthopedics 2024年第6期15卷 570-577页

作者： Rohit Ailani sanjeev kumar Bhuyan Brejesh kumar Prasad Amit kumar Namrata Dawani Department of Orthopaedics Lovee Shubh HospitalLucknowUttar Pradesh 226002India Department of Orthopaedics Gauhati Medical CollegeGuahati 781032India Department of Orthopaedics ESIC Medical College and HospitalFaridabadHaryana 121001India Department of Orthopaedics All India Institute of Medical SciencesKalyaniWest Bengal 741245India Department of Obstetric and Gynecology Kannauj Medical CollegeKannaujUttar Pradesh 209732India

BACKGROUND The preferred treatment for distal humeral intercondylar fractures is open reduction and internal fixation.While there is consensus about the posterior approach,several posterior approaches have been developed.It is debatable as to which approach is best.AIM To compare triceps reflecting anconeus pedicle(TRAP)and olecranon osteotomy approaches for internal fixation of distal humeral intercondylar fracture.METHODS In total,40 cases of Arbeitsgemeinschaft für Osteosynthesefragen/Association of the Study of Internal Fixation type C,closed,and Gustilo type I intercondylar humeral fractures were included.Patients ranged in age from 18 years to 70 years.The patients were randomized into two groups:TRAP group and olecranon osteotomy group,with 20 cases in each.All were followed up at 6 wk,3 months,6 months,and 12 months.Functional outcomes were measured in terms of flexion-extension arc,Disabilities of Arm,Shoulder and Hand score,and Mayo Elbow Performance Score.RESULTS The mean age was 43.2 years in the TRAP group and 37.5 years in the olecranon osteotomy group.The mean operative time and mean duration of hospital stay in the TRAP group were significantly higher than in the olecranon osteotomy group(119.5 vs 111.5 min and 9.85 vs 5.45 d,respectively).The mean arc of flexion-extension,Disabilities of Arm,Shoulder and Hand score,and Mayo Elbow Performance Score were comparable without any significant difference in the groups at the 12-month follow-up(107.0 vs 106.2,18.3 vs 15.7,and 84.2 vs 86.2,respectively).Ulnar paresthesia and superficial infections were comparable in both groups(2 cases vs 3 cases and 3 cases vs 2 cases,respectively).Hardware prominence was significantly higher in the olecranon osteotomy group,mostly due to tension band wiring.CONCLUSION Both approaches were equivalent,but there is a need for further study including higher numbers of subjects and longer study duration to prove the benefits of one approach over the other.

关键词： Elbow joint Humeral fracture Osteotomy Internal Fracture fixation

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Fabrication and Characterization of Banana Pseudostem Fibre Reinforced Epoxy Hybrid Composite Using Al_(2)O_(3) as Filler

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Journal of Bionic Engineering 2023年第4期20卷 1737-1746页

作者： Ankit Samal sanjeev kumar Manish Bhargava Barnik Saha Roy Mechanical Engineering Department National Institute of Technology AgartalaJiraniaTripura799046India Mechanical Engineering Department Subharti Institute of Technology and EngineeringMeerutUttar Pradesh250005India

Natural fibre-reinforced composites are now becoming incredibly common in various products because of their comparable qualities to conventional materials.Due to its availability,superior mechanical qualities,and low cost,banana pseudostem is extensively used in various applications requiring natural fibres.This study investigates the physical and mechanical properties of epoxy composites reinforced with banana pseudostem fibres that contain Al_(2)O_(3) particulate.In order to produce composites with fibre and filler loadings,manual hand layup was used.Fibre and filler loading effects on composite properties were studied in experiments.The results of the investigations demonstrate that proportion of Al_(2)O_(3) in composites significantly influences their mechanical and physical properties.Additionally,the composite with a fibre content of 30%shows improved mechanical proportions and hardness.Thermogravimetric analysis was used to study the composite's thermal behaviour.Composites are more thermally stable than raw epoxy.Fourier Transform Infrared Spectroscopy and Scanning electron microscopy analyses were used to characterize the composites.

关键词： Banana Pseudostem fibre Al_(2)O_(3) Epoxy Characterization Mechanical properties

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Exploring the potential of artificial intelligence techniques in prediction of the removal efficiency of vortex tube silt ejector

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International Journal of Sediment Research 2023年第4期38卷 615-627页

作者： sanjeev kumar Chandra Shekhar Prasad Ojha Nand kumar Tiwari Subodh Ranjan Department of Civil Engineering Indian Institute of Technology Department of Civil Engineering National Institute of Technology

A vortex tube silt ejector is a curative hydraulic structure used to remove sediment deposits from canals and is recognized as one of the most efficient substitutes for physically removing canal sediment. The spatially varied flow in the channel and the rotational flow behavior in the tube make the silt removal process complex. It is even harder to accurately predict the silt removal efficiency by traditional models accurately. However, artificial intelligence(AI) and machine learning approaches have emerged as robust substitutes for studying complex processes. Therefore, this research makes use of AI approaches; support vector machine(SVM), random forest(RF), random tree(RT), and multivariate adaptive regression spline(MARS) to compute the vortex tube silt ejection efficiency using the laboratory data sets. The outcomes of the artificial intelligence(AI)-based techniques also were compared with traditional models. It was found that the RT model(root mean square error, RMSE = 2.165, Nash Sutcliffe efficiency, NSE = 0.98) outperforms the other applied approaches which had relatively more significant result errors. The sensitivity analysis of the process depicts the extraction ratio as the key parameter in the computation of vortex tube silt ejector removal efficiency. The findings of the AI-based approaches discussed in the current study might be helpful for hydraulic engineers as well as researchers in the assessment of the removal efficiency of vortex tube silt ejectors.

关键词： Vortex tube silt ejector Support vector machine Random forest Random tree Multivariate adaptive regression spline

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Water and sediment geochemistry of an urban lake: Implications to weathering and anthropogenic activity

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International Journal of Sediment Research 2022年第6期37卷 809-822页

作者： Mohammad Saleem Ghulam Jeelani Ishfaq Ahmad Pall Javid Ganai sanjeev kumar Department of Geology and Mining Government of Jammu and Kashmir Department of Earth Sciences University of Kashmir Physical Research Laboratory

Lakes are sensitive ecosystems and respond quickly to any natural or anthropogenic contamination,particularly in urban areas due to poor planning and mismanagement in urban settlement, encroachment, and anthropogenic pollution. In the current study, water and sediment geochemistry are used along with available time series of geospatial data sets to assess: a) provenance and sources of pollution in the lake sediment and water, b) health risk using various sediment and water quality indices, and c)the key drivers of lake shrinkage. Chemical index of alteration(CIA) of lake sediment is higher(>85) with an atypical cluster of samples(CIA 50-75) towards the south and west of the lake. Further, samples in this cluster show granodioritic provenance which is contrary to the overall mafic provenance of lake sediment. The unusual decrease in CIA in the southern and western side of the lake is attributed to anthropogenically induced fresh sediment in the lake. The results indicate that the sediment is highly polluted by cadmium(Cd) and moderately polluted by copper(Cu), molybdenum(Mo), lead(Pb), and boron(B). Higher Metal Index(MI) values for most of the water samples(>70%) and Hazard Index(HI) for chromium(Cr), nickel(Ni), and cadmium(Cd) towards west and south of the lake reflect the deterioration of water quality in the lake. Moreover, land use change detection attained from available time series of geospatial data sets indicate a drastic transformation of the open water area into other land use classes particularly human settlement, shrinking the lake open water area by 13 km~2 since 1859. The current study will help policy makers and managers to restore and conserve the lake.

关键词： Lake sediment Trace elements Pollution indices Provenance Anthropogenic sources

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Information hiding with adaptive steganography based on novel fuzzy edge identification

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Defence Technology（防务技术） 2019年第2期15卷 162-169页

作者： sanjeev kumar Amarpal Singh Manoj kumar I.K.G Punjab Technical University Department of ECE Beant College of Engineering & Technology DAV Institute of Engineering & Technology

The evolution in communication techniques has created wide threats for crucial information transfer through a communication channel. Covert communication with steganography is a skill of concealing secret information within cover object and hence shields the data theft over rapidly growing network.Recently, diverse steganography techniques using edge identification have been proposed in literature.Numerous methods however utilize certain pixels in the cover image for inserting edge information,resulting in significant deformation. The conventional edge detection method limits the deployment of edge detection in steganography as concealing the information would introduce some variations to the cover image. Hence inserting data in pixel areas recognized by existing conventional edge detection techniques like canny cannot ensure the recognition of the exact edge locations for the cover and stego images. In this paper, an Adaptive steganography method based on novel fuzzy edge identification is proposed. The method proposed is proficient of estimating the precise edge areas of a cover image and also ensures the exact edge location after embedding the secret message. Experimental results reveal that the technique has attained good imperceptibility compared to the Hayat AI-Dmour and Ahmed AIAni Edge XOR method in spatial domain.

关键词： Information security Adaptive steganography Fuzzy edge detection Pattern recognition

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Effects of the type of forest alteration on gross nitrogen mineralization in soils of southern India

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Journal of Forestry Research 2021年第4期32卷 1689-1697页

作者： Niharika Sharma sanjeev kumar Geosciences Division Physical Research LaboratoryAhmedabadGujarat 380009India

Change in land-use practices can result in major shifts in the cycling of various elements,particularly nitrogen(N),which is prone to anthropogenic perturbations.For quantifying these shifts,accurate measurements of rates of biogeochemical transformations of N are needed.We used the(^(15)N) isotope dilution technique to understand the effects of the types of forest alteration on(N) transformation rates by comparing gross N mineralization and ammonium(NH_(4)^(+)) consumption rates in soils of a managed forest,an unmanaged forest,and a rubber plantation in Kerala,India.Overall,nitrate(NO_3~-) dominated soils of the managed and unmanaged forests,whereas soils in the rubber plantation showed relatively higher NH_(4)^(+) concentration.Total N(TN) and total organic carbon(TOC) concentrations were the highest under the rubber canopy(TN:1.49±0.02 mg N g^(-1);TOC:7.96±0.86 mg C g^(-1)).In soils of all three forest types,gross N mineralization rates were higher compared to NH_(4)^(+) consumption rates.Despite high TN and TOC concentrations,the rates of gross N mineralization and NH_(4)^(+) consumption were considerably lower in the rubber plantation(mineralization:1.08±0.08 mg N kg^(-1)d^(-1);consumption:0.85±0.09 mg N kg^(-1) d^(-)) compared to the managed(mineralization:3.71±0.35 mg N kg^(-1) d^(-1);consumption:2.20±1.41 mg N kg^(-1) d^(-1)) and unmanaged(mineralization:2.20±1.07 mg N kg^(-1) d^(-1);consumption:1.39±0.27 mg N kg^(-1) d^(-1)) forests.The lower NH_(4)^(+) consumption rates in the rubber plantation led to significantly higher(p<0.05) residence time of NH_(4)^(+)(~4 days) compared to the managed and unmanaged forests(<2 days),possibly contributing to acidification of rubber soils(pH~4.8).These results together suggest that replacement of naturally grown forests with a mono-cropped plantation such as rubber negatively impact rates of N transformation processes in tropical soils and imply that change in tree species composition of naturally grown forests can adversely affect soil microbial activity.We recommen

关键词： Nitrogen Mineralization Forest soils Rubber plantation Land-use change

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Quantization error in stereo imaging system with noise distributions

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International Journal of Modeling, Simulation, and Scientific Computing 2020年第5期11卷 86-117页

作者： Deepika Saini sanjeev kumar Department of Mathematics Graphic Era Deemed to be University Dehradun Uttarakhand 248002India Department of Mathematics Indian Institute of Technology Roorkee Roorkee 247667India

The problem of estimating quantization error in 2D images is an inherent problem in computer vision.The outcome of this problem is directly related to the error in reconstructed 3D position coordinates of an object.Thus estimation of quantization error has its own importance in stereo vision.Although the quantization error cannot be controlled fully,still statistical error analysis helps us to measure the performance of stereo systems that relies on the imaging parameters.Generally,it is assumed that the quantization error in 2D images is distributed uniformly that need not to be true from a practical aspect.In this paper,we have incorporated noise distributions(Triangular and Trapezoidal)for the stochastic error analysis of the quantization error in stereo imaging systems.For the validation of the theoretical analysis,the detailed simulation study is carried out by considering different cases.

关键词： Quantization error stereo images noise distributions range estimation error range error magnitude relative range error

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Patterns of Violence Experienced by Women Victims of Domestic Violence in Bengaluru City:A Cross-sectional Study

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Journal of Forensic Science and Medicine 2023年第3期9卷 195-199页

作者： K.A.Jyothsna Kannappa V.Shetty sanjeev kumar Mahesh Ganeshan Department of Psychiatry Abhaya HospitalBengaluruKarnatakaIndia School of Social Work Indira Gandhi National Open UniversityNew DelhiIndia Department of PSS in Disaster Management NIMHANSBengaluruKarnatakaIndia

Introduction:Domestic violence has negative effects on the physical health and mental health of women.Domestic violence takes various forms:physical,psychological,sexual,and emotional abuse.Many organizations are working with women and their families to prevent and reduce instances of violence.The current study aimed to understand the various patterns of violence among women victims of domestic violence.Materials and Methods:The sample of 30 women approaching the women’s helpline,in Bengaluru was considered for the study using a cross-sectional design.The interview schedule for assessing patterns of violence was used.Descriptive statistics were used for analyzing the data.Results:The majority of the respondents(50%)were in the age group of 20-29 years,more than half(53.3%)were homemaker and the majority(70%)stayed in nuclear family structures.More than one-fourth reported severe physical violence such as pushing,slapping,and punching.Most of the respondents reported husbands to be perpetrators of violence,60%reported violence as a habit,and the majority reported dowry harassment as the reason for violence.Conclusion:Mental health professionals need to work on the root cause of habitual violence and dowry harassment perpetrated by the spouse and empower the victims.

关键词： Domestic violence mental health patterns of violence women’s helpline

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Sudden cardiac death in a case of Crohn's disease with COVID-19: A case report

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Journal of Acute Disease 2022年第3期11卷 123-126页

作者： Neeraj kumar Subhajit Ghosh Abhyuday kumar sanjeev kumar Prem kumar Departments of Trauma&Emergency All India Institute of Medical SciencesPatnaIndia Departments of Anaesthesiology All India Institute of Medical SciencesPatnaIndia Departments of CTVS All India Institute of Medical SciencesPatnaIndia Departments of Radiology All India Institute of Medical SciencesPatnaIndia

Rationale:The mechanism of sudden cardiac death in COVID-19 can be multifactorial.Cardiac hypersensitivity to 5-ASA therapy leading to myocarditis has been reported in some cases.Cytokine storm syndrome and idiosyncratic reaction with mesalazine use may lead to sudden cardiac death in COVID-19.Use of immunosuppressants in hospitalized COVID-19 patients should be continued with caution,especially in patients with inflammatory bowel disease.Patient’s concern:A 75-year-old man who was tested positive for SARS-CoV-2 was admitted with a history of shortness of breath for the last two days.He was a known case of Crohn’s disease treated with mesalazine.Diagnosis:COVID-19 pneumonia with underlying Crohn’s disease leading to sudden cardiac death.Intervention:Remdesivir,antibiotics,steroids,low molecular weight heparin,tablet zinc,tab vitamin C,and other supportive treatment were started.Because of increased inflammatory markers,itolizumab was given to the patient on the 2nd day.Outcome:On the 5th day of the intensive care unit,the patient complained of sudden chest pain with respiratory distress leading to bradycardia and asystole and could not be resuscitated.Lessons:Causes for sudden cardiac death in COVID-19 pneumonia patients with Crohn’s disease is multifactorial.Although mesalazine may be a safe and effective drug in the management of inflammatory bowel disease,it can induce sytokine strom syndrome and idiosyncratic reactions that could be one of the reasons of sudden cardic death.Therefore,we should be aware of its serious and potentially life-threatening complications,especially in COVID-19 infected patients.

关键词： COVID-19 Sudden cardiac death Chron’s disease

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Single center experience of capsule endoscopy in patients with obscure gastrointestinal bleeding

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World Journal of Gastroenterology 2011年第6期17卷 774-778页

作者： Mahesh kumar Goenka Shounak Majumder sanjeev kumar Pradeepta kumar Sethy Usha Goenka Institute of Gastroenterology Apollo Gleneagles Hospital

AIM:To identify optimum timing to maximize diagnostic yield by capsule endoscopy (CE) in patients with obscure gastrointestinal bleeding (OGIB).METHODS:We identified patients who underwent CE at our institution from August 2003 to December 2009.Patient medical records were reviewed to determine type of OGIB (occult,overt),CE results and complications,and timing of CE with respect to onset of bleeding.RESULTS:Out of 385 patients investigated for OGIB,284 (74%) had some lesion detected by CE.In 222 patients (58%),definite lesions were detected that could unequivocally explain OGIB.Small bowel ulcer/erosions secondary to Crohn's disease,tuberculosis or non-steroidal anti-inflammatory agent use were the commonest lesions detected.Patients with overt GI bleeding for < 48 h before CE had the highest diagnostic yield (87%).This was significantly greater (P < 0.05) compared to that in patients with overt bleeding prior to 48 h (68%),as well as those with occult OGIB (59%).CONCLUSION:We established the importance of early CE in management of OGIB.CE within 48 h of overt bleeding has the greatest potential for lesion detection.

关键词：消化道出血患者原因内镜胶囊非甾体抗炎药发病类型行政

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