Robotic Surgical Devices , Systems ,
And Related Methods,
2021
Lincoln , NE
Robotic Surgical Devices , Systems , And Related Methods, Shane Farritor, Erik Mumm, Philip Chu, Nishant Kumar, Jason Dumpert, Yutaka Tsutano
Department of Mechanical and Materials Engineering: Faculty Publications
The embodiments disclosed herein relate to various medical device components, including components that can be incorporated into robotic and / or in vivo medical devices. Certain embodiments include various modular medical devices for in vivo medical procedures.
In Vivo Printing Of Growth Factor-Eluting Adhesive Scaffolds Improves Wound Healing,
2021
Harvard Medical School
In Vivo Printing Of Growth Factor-Eluting Adhesive Scaffolds Improves Wound Healing, Kristo Nuutila, Mohamadmahdi Samandari, Yori Endo, Yuteng Zhang, Jacob Quint, Tannin A. Schmidt, Ali Tamayol, Indranil Sinha
Department of Mechanical and Materials Engineering: Faculty Publications
Acute and chronic wounds affect millions of people around the world, imposing a growing financial burden on patients and hospitals. Despite the application of current wound management strategies, the physiological healing process is disrupted in many cases, resulting in impaired wound healing. Therefore, more efficient and easy-to-use treatment modalities are needed. In this study, we demonstrate the benefit of in vivo printed, growth factor-eluting adhesive scaffolds for the treatment of full-thickness wounds in a porcine model. A custom-made handheld printer is implemented to finely print gelatin-methacryloyl (GelMA) hydrogel containing vascular endothelial growth factor (VEGF) into the wounds. In vitro and …
Impact Of Regional Climate Changes On Changes In River Water Content In Uzbekistan,
2021
TIIAME
Impact Of Regional Climate Changes On Changes In River Water Content In Uzbekistan, A.T. Salokhiddinov, P.A. Khakimova, R.V. Toryanniova, O.A. Ashirova, A.G. Gofurov
Irrigation and Melioration
The paper presents the research results on the analysis of the climate change impacts on the potential of water resources in Central Asia. We analyzed the materials of an extensive database of monitoring data from numerous gauge stations on different river basins and satellite data information. A quantitative assessment of the transformation of river hydrographs, the growth of flow variability in the Republic of Uzbekistan's major rivers, in connection with climate change, was performed. The specific features of the impact of climate changes on changes in the water content of rivers in Uzbekistan in large and small river basins are …
Washing Technology For Medium And Highly Saline Soils,
2021
Scientific Research Institute of Irrigation and Water Problems
Washing Technology For Medium And Highly Saline Soils, B.K. Saliev, M. S. Yuldashev, N.O. Shaimanov
Irrigation and Melioration
The article discusses the issues of conducting field experiments to assess the reclamation conditions of soils, which are a particular issue of managing salinity and water-salt regime, as well as increasing the efficiency of desalination. Today, 46.6% of the irrigated lands of the Republic of Uzbekistan have salinization of varying degrees, of which 30.9% are weak, 13.3% are moderate and 2.5% are highly saline. Medium and highly saline lands make up 15.8%. The essence of the proposed method of flushing from the traditional one is that in late autumn or winter, the collectors-ditches are closed, and the groundwater is artificially …
Distribution Of Calcium And Its Reserve Forms In Widespread Irrigated Gray Meadow Soils Of The Syrdarya Region,
2021
Research Institute of Environment and Environmental Technologies
Distribution Of Calcium And Its Reserve Forms In Widespread Irrigated Gray Meadow Soils Of The Syrdarya Region, A. Akhatov
Irrigation and Melioration
The article examines the uneven distribution of calcium in reserve (general, potential, close and labile) forms in irrigated and gray-earth-meadow soils of the experimental section of the NIISSAVKH of the Gulistan district of the Syrdarya region and the farms "Sokhil" and "Ak altin" in irrigated meadow soils the form of a close reserve in the soil profile is 310 mg per 100 gr of soil. The upper layer of highly saline, medium loamy soil gradually decreases at a depth of 60-76 cm. layer. The labile calcium reserve in irrigated serozem-meadow, highly saline, medium loamy soils varies from 175 to 260 …
Design Of A Channel Straightening Route Using A Combined Dam With A Through Part Made Of Tetrahedra,
2021
TIIAME
Design Of A Channel Straightening Route Using A Combined Dam With A Through Part Made Of Tetrahedra, M.R. Bakiev, A.B. Хаlimbetov, С.Э. Шукурова, I.J. Asamatdinov
Irrigation and Melioration
The design of the route when regulating riverbeds, the direction of the flow to the point of water intake will require solving some issues, including the amount of deviation of the dynamic axis of the flow, constrained by regulatory structures. The main purpose of this work is to develop a method for calculating the deviation of the dynamic axis of a flow that is one-way constrained by a combined dam, then through part of which is made of tetrahedra. The problem is realized using the Varignon theorem and the flow conservation equation written for the streamlines where the household state …
Improvement Of Informational-Methodological Provision On Foreign Languages For Teachers,
2021
TIIAME
Improvement Of Informational-Methodological Provision On Foreign Languages For Teachers, G. Eshchanova
Irrigation and Melioration
The article discusses the innovative areas of activity, related to the use of information and communication technologies in the educational process of teachers in foreign languages in the world practice, the development of teachers professional communicative competence in teaching English, the use of information and communication, advanced pedagogical technologies in teaching to ensure the solution of such issues, as the increase in the level of development of foreign language skills, diagnostic technologies among teachers.
Дождеваsome Aspects Of Water Management In The Republic Of Uzbekistan During The Period Of Independence (Reality And Forecast),
2021
Ministry of Higher and Secondary Specialized Education of the Republic of Uzbekistan
Дождеваsome Aspects Of Water Management In The Republic Of Uzbekistan During The Period Of Independence (Reality And Forecast), S. Khodjaev
Irrigation and Melioration
To date, there is no alternative to the introduction of the principles of integrated water resources management (IWRM), this is proved by the research of SIC ICWC on the territory of the South Fergana main canal, where the specific water supply per hectare of irrigated area has been reduced by 32% on an area of 120 thousand hectares, that is up to 7 thousand m³/ha, instead of the limited ones 10 thousand m³/ha. Researches recommend cutting off all types of collector-drainage waters (CDW) from the river trunks of the Aral Sea basin, including the Syr-Darya and Amu-Darya, since CDW are …
The Influence Of Gender Approaches On Education Efficiency,
2021
TIIAME
The Influence Of Gender Approaches On Education Efficiency, G. Eshchanova
Irrigation and Melioration
The given article covers the influence of gender approaches on education efficiency on the basis of statistical and scientific data, and the need to rely on the basis of the necessary knowledge for the ecologically sustainable development of women's knowledge, competence and entrepreneurship are shown. The educational process based on Gender differences and equality contributes significantly to the development of society.
Economic Assessment Of Factors Affecting The Decision Of Households To Engage In Non-Farm Activities,
2021
Muratov
Economic Assessment Of Factors Affecting The Decision Of Households To Engage In Non-Farm Activities, Sh.A. Muratov
Irrigation and Melioration
In this study, non-farm activities and their importance were studied, and it is analysed the influence of push and pull factors on the decision of family heads to engage in non-farm activities by Probit model regression. Furthermore, it is determined their elastic coefficients. The analysed data are collected by conducting an online survey from 134 respondents. The results are showed that the decision of family heads to engage in non-farm activities was greatly influenced by their gender, education, and number of family members, electricity supply, transport services, and size of their land. Namely, the decision of the head of the …
Identifying The Determinants And Extent Of Crop Diversification At Farm Level: A Case Study Of Uzbekistan,
2021
Tashkent State Agrarian University
Identifying The Determinants And Extent Of Crop Diversification At Farm Level: A Case Study Of Uzbekistan, A.Э. Primov, M.H. Saidov, I. B. Rustamova, A.A. Abduvasikov
Irrigation and Melioration
Since independence, the government of Uzbekistan has implemented the number of agricultural policies such as making some crucial structural reforms at the farms, comprising different institutions and enhancing diversification of agricultural production in order to stabilize the agricultural sector of the country. Therefore, crop diversity has an important role in sustainable agriculture. We calculated the diversification index based on the Simpson Diversity Index method while ordinary least square (OLS) regression analysis was employed to assess the association of crop diversification on farm income using cross-sectional data from 381 farmers of Uzbekistan. The study revealed the mean computed Simpson Index values …
Control Of Change Of Phase
Through Physical Surface Shaping,
2021
NuTech Ventures
Control Of Change Of Phase Through Physical Surface Shaping, Troy Anderson, Sidy Ndao, Craig Zuhlke, Dennis Alexander, George Gogos
Department of Mechanical and Materials Engineering: Faculty Publications
A system embodiment includes , but is not limited to , a solid structure configure to contact each of a material in a liquid phase and a material in a vapor phase , the solid structure including a plurality of microstructures protruding at angles relative to a horizontal plane ; and a layer of nanoparticles positioned on the plurality of microstructures , the layer of nanoparticles having a composition that is at least one of a same material as the plurality of microstructures and an oxide of the same material as the plurality of microstructures , the plurality of microstructures …
Atomistic Thermo-Mechanical Description Of The Deformation Behavior, Scaling Laws, And Constitutive Modeling Of Nanoporous Gold,
2021
Louisiana State University
Atomistic Thermo-Mechanical Description Of The Deformation Behavior, Scaling Laws, And Constitutive Modeling Of Nanoporous Gold, Mohammed Hassan Yousef Saffarini
LSU Doctoral Dissertations
Metallic foams, or nanoporous (NP) metals as it is widely referred to in literature, with ligament sizes up to a few tens of nm show exceptional mechanical properties such as high strength and stiffness per weight ratio under different loading scenarios due to their high surface area to solid volume ratio. Therefore, they can be utilized in a wide range of applications making them of great interest to researchers. While their elasticity and yield strength have been the subject of several studies, very limited attention was given to the effect of size, strain rate, and temperature on the material plastic …
Preventing Transmission Of Covid 19 In Hvac Duct Systems: Implementations Of Hvac System Design Upgrade,
2021
CUNY New York City College of Technology
Preventing Transmission Of Covid 19 In Hvac Duct Systems: Implementations Of Hvac System Design Upgrade, Jacob S. Lopez, Adama Barro
Publications and Research
The recent pandemic outbreak has triggered a global alarm to increase efforts on finding the best methods to mitigate contagious viral pathogens. This project is a continuation of our mission to study engineering guidelines needed to implement upgrades to HVAC Systems in order to deter airborne pathogens such as the covid-19 virus. In our previous projects we researched how covid-19 can possibly flow through the ambient air inside of restaurants, office spaces, and locomotive train cabins. As we continued our research, we were able to find some solutions that will be best used to deactivate and prevent the virus from …
Minimally Invasive Delivery Of 3d Shape Recoverable Constructs With Ordered Structures For Tissue Repair,
2021
University of Nebraska Medical Center
Minimally Invasive Delivery Of 3d Shape Recoverable Constructs With Ordered Structures For Tissue Repair, Shixuan Chen, Mark Alan Carlson, Xiaowei Li, Aleem Siddique, Wuqiang Zhu, Jingwei Xie
Department of Mechanical and Materials Engineering: Faculty Publications
Minimally invasive procedures are becoming increasingly more common in surgery. However, the biomaterials capable of delivering biomimetic, three-dimensional (3D) functional tissues in a minimally invasive manner and exhibiting ordered structures after delivery are lacking. Herein, we reported the fabrication of gelatin methacryloyl (GelMA)-coated, 3D expanded nanofiber scaffolds and their potential applications in minimally invasive delivery of 3D functional tissue constructs with ordered structures and clinically appropriate sizes (4 cm × 2 cm × 1.5 mm). GelMA-coated, expanded 3D nanofiber scaffolds produced by combining electrospinning, gas-foaming expansion, hydrogel coating, and crosslinking are extremely shape recoverable after release of compressive strain, displaying …
The Effects Of The Transient And Performance Loss Rates On Pv Output Performance,
2021
Technological University Dublin
The Effects Of The Transient And Performance Loss Rates On Pv Output Performance, Chibuisi Chinasaokwu Okorieimoh, Brian Norton, Michael Conlon
Conference papers
Solar photovoltaic (PV) panels experience long-term performance degradation as compared to their initial performance, resulting in lower like-per-like efficiencies and performance ratios. Manufacturers of solar photovoltaic modules normally guarantee a lifespan of more than 20 years. To meet such commitments, it is important to monitor and mitigate PV module degradation during this period, as well as beyond, to recognize maintenance and repair needs. Solar PV modules degrade over time, becoming less effective, less reliable, and eventually unusable. The effects of transient and performance loss rates on the output performance of polycrystalline silicon (p-Si) solar PV modules are the focus of …
Development Of A Marine Biodegradable Target Balloon,
2021
California Polytechnic State University, San Luis Obispo
Development Of A Marine Biodegradable Target Balloon, Blake Samuel Robinson, Arash Sam Akhavi, David Leonardo Albarran-Martinez
Materials Engineering
The US Navy utilizes PVC target balloons, known as Killer Tomatoes, that are inflated onboard a naval vessel then deployed into the ocean to calibrate a variety of weaponry. The Navy has requested the investigation of biodegradable polymers to replace the PVC in attempts to reduce ocean waste that is generated from the leftover PVC material. After communicating with American Pacific Plastic Fabricators (APPF), the current manufacturer of the Killer Tomatoes, we gained an understanding of the manufacturing process and the material requirements that would allow a new material to be integrated into their current process. Two proprietary, trial polymers …
Maize Tassel Detection From Uav Imagery Using Deep Learning,
2021
University of Nebraska - Lincoln
Maize Tassel Detection From Uav Imagery Using Deep Learning, Aziza Alzadjali, Mohammed H. Alali, Arun Narenthiran Weeranampalayam Sivakumar, Jitender S. Deogun, Stephen Scott, James C. Schnable, Yeyin Shi
Department of Mechanical and Materials Engineering: Faculty Publications
The timing of flowering plays a critical role in determining the productivity of agricultural crops. If the crops flower too early, the crop would mature before the end of the growing season, losing the opportunity to capture and use large amounts of light energy. If the crops flower too late, the crop may be killed by the change of seasons before it is ready to harvest. Maize flowering is one of the most important periods where even small amounts of stress can significantly alter yield. In this work, we developed and compared two methods for automatic tassel detection based on …
Optical Engineering Of Iii-Nitride Nanowire Light-Emitting Diodes And Applications,
2021
New Jersey Institute of Technology
Optical Engineering Of Iii-Nitride Nanowire Light-Emitting Diodes And Applications, Ha Quoc Thang Bui
Dissertations
Applications of III-nitride nanowires are intensively explored in different emerging technologies including light-emitting diodes (LEDs), laser diodes, photodiodes, biosensors, and solar cells. The synthesis of the III-nitride nanowires by molecular beam epitaxy (MBE) is investigated with significant achievements. III-nitride nanowires can be grown on dissimilar substrates i.e., silicon with nearly dislocation free due to the effective strain relaxation. III-nitride nanowires, therefore, are perfectly suited for high performance light emitters for cost-effective fabrication of the advanced photonic-electronic integrated platforms. This dissertation addresses the design, fabrication, and characterization of III-nitride nanowire full-color micro-LED (µLED) on silicon substrates for µLED display technologies, high-efficient …
Intermittent Dynamics Of Dense Particulate Matter,
2021
New Jersey Institute of Technology
Intermittent Dynamics Of Dense Particulate Matter, Chao Cheng
Dissertations
Granular particle systems are scattered around the universe, and they can behave like solids when there exist strong force-bearing networks, so that the granular system can resist certain stress without deformation. When such a network is not present, particles yield to small stress and behave like a fluid. A wide range of systems exhibit intermittent dynamics as they are slowly loaded, with different dynamical regimes governing many industrial and natural phenomena. While a significant amount of research on exploring intermittent dynamics of granular systems has been carried out, not much is known about the connection between particle-scale response and the …
