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2021 ◽  
Vol 2 (3) ◽  
pp. 78-81
Author(s):  
Relizha Yeerlanbieke ◽  
Huazhang Wang

Aiming at the current stage of the twin network target tracking algorithm, the tracking target is occluded, the tracking is affected by illumination, and the target's scale change from far to near or from near to far causes tracking failure. This article will optimize and improve from two directions. The twin neural network first uses an adaptive detailed feature extraction, adds a residual network to the twin network, and embeds a detailed feature retention module in each layer, amplifies the changes in the target feature, and retains the important structure of the original target feature Details: Secondly, the introduction of a spatial attention mechanism allows the main branch to pay more attention to the area to be matched, improves the ability to distinguish features, and makes the tracking effect better. In order to verify the effectiveness of this experiment, this experiment was tested on the data set OTB2015. The experiment proved that the proposed algorithm performs better in accuracy and success rate.


2021 ◽  
Author(s):  
Betsy Sara Thomas ◽  
Mohan Alexander

The force applied by the orthodontist to facilitate the orderly movement of teeth to their new position may have deleterious effects on the most important structure involved in the procedure—the periodontium. This chapter endeavors to provide an overview of the biological processes that play a role in achieving the patient’s as well as the orthodontist’s objective.


2021 ◽  
Vol 9 (12) ◽  
pp. 3012-3016
Author(s):  
Warkade Pravini Arun ◽  
Kothekar Maneesha ◽  
Mishra Snehavibha

Updhatus are important physiological units and are derived from Dhatus and resemble Dhatus in terms of structure, function and nature. Dhatus are the seven basic fundamental principles that support the basic structure which hold the bodily elements together and the functioning of the body. Meda dhatu is fourth among seven dhatus. During the process of metabolism and formation of Meda Dhatu, ligaments (snayu) are formed as metabolic byproducts (upadhatu). Snayu is the most important structure of the human body which helps to maintain the weight carrying capacity of the joint and plays a crucial role during the movement of the joint. The Snayu is much similar to the ligament. Any injury to the ligament is known as a sprain. Sprain is most common in sportsmen and hard workers. Common ligamental injuries are to the knee, ankle, wrist, thumb, neck or back ligament with ankle injury being the most commonly occurring injury. So, the complete knowledge of snayu very essential to prevent such injuries and certain disease conditions. Keywords: Updhatu, Meda Dhatu, Snayu


2021 ◽  
Vol 15 ◽  
Author(s):  
Ema Bokulić ◽  
Tila Medenica ◽  
Vinka Knezović ◽  
Andrija Štajduhar ◽  
Fadi Almahariq ◽  
...  

The subthalamic nucleus (STN) is a small, ovoid structure, and an important site of deep brain stimulation (DBS) for the treatment of Parkinson’s disease. Although the STN is a clinically important structure, there are many unresolved issues with regard to it. These issues are especially related to the anatomical subdivision, neuronal phenotype, neuronal composition, and spatial distribution. In this study, we have examined the expression pattern of 8 neuronal markers [nNOS, NeuN, parvalbumin (PV), calbindin (CB), calretinin (CR), FOXP2, NKX2.1, and PAX6] in the adult human STN. All of the examined markers, except CB, were present in the STN. To determine the neuronal density, we have performed stereological analysis on Nissl-stained and immunohistochemical slides of positive markers. The stereology data were also used to develop a three-dimensional map of the spatial distribution of neurons within the STN. The nNOS population exhibited the largest neuronal density. The estimated total number of nNOS STN neurons is 281,308 ± 38,967 (± 13.85%). The STN neuronal subpopulations can be divided into two groups: one with a neuronal density of approximately 3,300 neurons/mm3 and the other with a neuronal density of approximately 2,200 neurons/mm3. The largest density of STN neurons was observed along the ventromedial border of the STN and the density gradually decreased toward the dorsolateral border. In this study, we have demonstrated the presence of 7 neuronal markers in the STN, three of which were not previously described in the human STN. The human STN is a collection of diverse, intermixed neuronal subpopulations, and our data, as far as the cytoarchitectonics is concerned, did not support the tripartite STN subdivision.


2021 ◽  
Author(s):  
canset aydın ◽  
övsen önay ◽  
melih gaffar gözükara ◽  
Hakan Ulubay

Abstract Objectives The nasal septal body (NSB) is the thickened area of the septum located superior to the inferior turbinates and anterior to the middle turbinates. NSB contributes to nasal breathing via functionally and anatomically. The aim of the present study was to analyze NSB size and its association with such variables as age, septal deviation, and nasal turbinate size Material and Methods This retrospective study included 381 randomly selected patients that underwent paranasal sinus CT between 2014 and 2019. NSB size, septal deviation angle, and middle and inferior turbinate size were analyzed. Results NSB, inferior turbinate, middle turbinate, and inferior turbinate-P were significantly smaller on the deviated side. NSB, inferior turbinate, middle turbinate, and inferior turbinate-P size according to nasal septal angle was also significantly smaller on the deviated side. NSB and inferior turbinate size was positively correlated. Conclusion The NSB is an important structure for the regulation of air flow in the nose and should be evaluated in routine examination of the nose especially before the nasal surgery.


Energies ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7911
Author(s):  
Lin Wang ◽  
Anke Xue

The DC microgrid is an important structure of microgrids. Aiming at the problem of the grid-connected DC microgrid modeling, a grid-connected DC microgrid equivalent modeling method based on the optimized Broad Learning System (BLS) is proposed. Taking the electrical parameter data of the grid-connected DC microgrid access point as the training data set of BLS, the equivalent model of the grid-connected equivalent model is constructed. In order to further improve the accuracy and generalization performance of the model, the shark smell optimization (SSO) algorithm is used to optimize the input weights and thresholds of the BLS. Furthermore, the shark smell optimization-Broad Learning System (SSO-BLS) algorithm is proposed. SSO-BLS is compared with RBF, BLS, BFO-ELM, and other algorithms. The results show that the grid-connected DC microgrid model based on SSO-BLS has good accuracy and generalization characteristics.


2021 ◽  
Vol 9 (9) ◽  
pp. 2151-2154
Author(s):  
Ishan Malhotra ◽  
Sakshi 2 ◽  
Subhash Upadhyay ◽  
Jannu Manohar

In Ayurveda classics, Marma is illustrated as the vital point in the human body and its knowledge plays an im- portant role in Sharir Rachana. Marma was first documented by Acharya Charak but the detailed description of Marma Sharir is available in Sushruta Samhita. Acharya Sushruta stated every aspect of Marma like definition, types, signs, and symptoms related to injury of Marma. Marma is a very important structure present in the body which causes pain or even death when getting injured. According to Acharya Sushruta in the description of Eka- dash Indriya Hasta and Paad are included under the five Karmendriya and their function is mentioned as Aadan and Vihar respectively and Hasta (hand) is considered as the most important/superior Yantra among all the Yan- tras by Acharya Susruta. Although each part of the human body is important still extremities possess the most importance as all body activities depend on limbs as without limbs existence of the human body is hard to imag- ine. So Anatomical interpretation of Urdhva Shakhagata Snayu Marma along with its clinical importance is very much needed in the present era. An attempt has been made to explore structures present in Urdhva Shakhagata Snayu Marma through cadaveric dissection. Keywords: Ekadash Indriya, Snayu Marma, Yantra.


2021 ◽  
pp. 2055-2063
Author(s):  
Fahd Al-Sobayil ◽  
Madeh A. Sadan ◽  
Elsayed A. El-Shafaey ◽  
Jamal Allouch

Background and Aim: A healthy joint is an important structure for the proper movement of the camel limb. Intra-articular (IA) injection is frequently used in veterinary practice for diagnostic and therapeutic purposes of joint injuries. Thus, the current study aimed to describe the injection of the hindlimb joints in dromedary camels based on the anatomical and arthrographic-guided landmarks. Materials and Methods: Eighteen orthopedically sound adult camels (mean±standard deviation age: 78±12 months) of both sexes were included in this study. Three camels were euthanized to identify anatomical features in the hindlimb joints and related structures. IA injections were performed in the hindlimbs of 5 camel cadavers to evaluate the optimal IA injection site, which was confirmed by arthrography. The optimized IA injection technique was applied in 10 live camels and confirmed by arthrocentesis and arthrography. For each joint, injection criteria (number of attempts, difficulty of injection, and successful injection) were assessed, scored, and statistically compared to the other joints. Results: The summation of IA injection criteria scores was significantly higher (p<0.05) in the femorotibial, femoropatellar, tibiotarsal, fetlock, pastern, and coffin joints in comparison to the hip joint. Conclusion: Anatomical and arthrographic-guided techniques offer considerable advantages for the characterization of anatomical landmarks and selection of the appropriate IA injection site in the hindlimb in dromedary camels. Furthermore, a reference approach for camels was established that is different from the approach for cattle and horses.


2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Yuwei Liu ◽  
Wei Lu ◽  
Kan Ouyang ◽  
Zhenhan Deng

AbstractThe acetabular labrum is an important structure that contributes to hip joint stability and function. Diagnosing labral tears involves a comprehensive assessment of clinical symptoms, physical examinations, imaging examinations, and arthroscopic confirmation. As arthroscopy is an invasive surgery, adjuvant imaging of the acetabular labrum is increasingly imperative for orthopedists to diagnose and assess labral lesions prior to hip arthroscopy for surgical management. This article reviews the current imaging strategies for the evaluation of labrum lesions.


2021 ◽  
Vol 263 (1) ◽  
pp. 5740-5747
Author(s):  
Caoyang Li ◽  
David Herrin ◽  
John Baker ◽  
Asad M. Sardar

Residential air conditioning units include several sources which can lead to vibrational and noise issues. The most important structure-borne source is the compressor which controls the noise and vibration in certain frequency ranges. Compressors are mounted on four relatively stiff rubber grommets which partially isolate the basepan from the compressor motion while also ensuring that the compressor does not move too much. In this work, the grommets are simulated using the finite element method and results are correlated with measurement results with good agreement. It is demonstrated that the hyperelastic properties of the grommets should be increased due to the Payne effect to improve correlation.


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