Miracle-dz/UniFAR-FTUs huggingface dataset:
Kinematic Analysis of the Snatch Lift With Elite Female Weightlifters During the 2010 World Weightlifting Championship

Abstract Hasan Akkuş. Kinematic analysis of the snatch lift with elite female weightlifters during the 2010 World Weightlifting Championship. J Strength Cond Res 26(4): 897–905, 2012—The objectives of this study were to determine the mechanical work, the power output, and the angular kinematics of the lower limb and the linear kinematics of the barbell during the first and second pulls in the snatch lift event of the 2010 Women's World Weightlifting Championship, an Olympic qualifying competition, and to compare the snatch performances of the women weightlifters to those reported in the literature. The heaviest successful snatch lifts of 7 female weightlifters who won gold medals were analyzed. The snatch lifts were recorded using 2 Super-Video Home System cameras (50 fields·s−1), and points on the body and the barbell were manually digitized using the Ariel Performance Analysis System. The results revealed that the duration of the first pull was significantly greater than the duration of the transition phase, the second pull, and the turnover under the barbell (p < 0.05). The maximum extension velocities of the lower limb in the second pull were significantly greater than the maximum extension velocities in the first pull. The fastest extensions were observed at the knee joint during the first pull and at the hip joint during the second pull (p < 0.05). The barbell trajectories for the heaviest snatch lifts of these elite female weightlifters were similar to those of men. The maximum vertical velocity of the barbell was greater during the second pull than in the first pull (p < 0.05). The mechanical work performed in the first pull was greater than the second pull, and the power output during the second pull was greater than that of the first pull (p < 0.05). Although the magnitudes of the barbell's linear kinematics, the angular kinematics of the lower limb, and other energy characteristics did not exactly reflect those reported in the literature, the snatch lift patterns of the elite women weightlifters were similar to those of male weightlifters.
Local delivery of controlled-release simvastatin/PLGA/HAp microspheres enhances bone repair

Statins are used clinically for reduction of cholesterol synthesis to prevent cardiovascular disease. Previous in vitro and in vivo studies have shown that statins stimulate bone formation. However, orally administered statins may be degraded during first-pass metabolism in the liver. This study aimed to prevent this degradation by developing a locally administered formulation of simvastatin that is encapsulated in poly(lactic-co-glycolic acid)/hydroxyapatite (SIM/PLGA/HAp) microspheres with controlled-release properties. The effect of this formulation of simvastatin on bone repair was tested using a mouse model of gap fracture bridging with a graft of necrotic bone. The simvastatin released over 12 days from 3 mg and 5 mg of SIM/PLGA/HAp was 0.03–1.6 μg/day and 0.05–2.6 μg/day, respectively. SIM/PLGA/HAp significantly stimulated callus formation around the repaired area and increased neovascularization and cell ingrowth in the grafted necrotic bone at week 2 after surgery. At week 4, both 3 mg and 5 mg of SIM/PLGA/HAp increased neovascularization, but only 5 mg SIM/PLGA/HAp enhanced cell ingrowth into the necrotic bone. The low dose of simvastatin released from SIM/PLGA/HAp enhanced initial callus formation, neovascularization, and cell ingrowth in the grafted bone, indicating that SIM/PLGA/HAp facilitates bone regeneration. We suggest that SIM/PLGA/HAp should be developed as an osteoinductive agent to treat osteonecrosis or in combination with an osteoconductive scaffold to treat severe bone defects.
INVESTIGATION OF ANTIHEMOLYTIC, XANTHINE OXIDASE INHIBITION, ANTIOXIDANT AND ANTIMICROBIAL PROPERTIES OF SALVIA VERBENACA L. AERIAL PART EXTRACTS

Background: In this study, Salvia verbenaca L. aerial part extracts (SVEs): were screened for their antihemolytic, xanthine oxidase (XO) inhibition, antioxidant and antimicrobial activities. Material and methods: To investigate SVEs antihemolytic activity, the 2,2,-azobis (2-amidinopropane) dihydrochloride (AAPH) was used to induce erythrocyte oxidative hemolysis. In XO inhibition test, xanthine was used as substrate and cytochrome c for generating superoxide anions. The antioxidant activity of SVEs was examined by means of reducing power, DPPH free radical scavenging and iron chelating assays. In addition, SVEs were tested for their antimicrobial effects by evaluating antibacterial and antifungal activities. Results: Ethyl acetate extract (EAE) contains the highest amount of total polyphenols and flavonoids (661.78 ± 4.00 mg GAE / g E) and (28.81 ± 0.38 mg QE / g E) respectively. In antihemolytic test EAE was the most active extract with an HT50 value of 165 min. SVEs gave significant inhibitory effects on XO, especially the chloroform extract (ChE) with IC50 value of 0.0088 ± 0.000 mg/ml. EAE was the most active extract in reducing power essay (EC50: 0.0047 ± 0.000 mg/ml) and in DPPH radical scavenging essay (IC50: 0.0086 ± 0.000 mg/ml). Finally, the EAE has inhibited the growth of nine bacterial strains with inhibition zone diameters of (12 to 16 mm), but no activities have found against fungal strains. Conclusion: S. verbenaca could be considered as a potential source of natural antihemolytic, enzyme modulator, antioxidant and antibacterial agents.
Laboratory diagnosis of late-onset male hypogonadism andropause.

OBJECTIVES To evaluate which factors influence the laboratorial diagnosis of late-onset male hypogonadism (LOH). METHODS Total testosterone (TT), SHBG and albumin were measured in 216 men aged 52-84 years. The laboratorial definition of LOH was two values of calculated free testosterone (cFT) <6.5 ng/dl, according to Vermeulen's formula. RESULTS At the first blood test, cFT was <6.5 ng/dl in 27% of the men. Laboratorial LOH (confirmed by two tests) was present in 19%, but TT levels were low in only 4.1%. Age influenced TT (p=0.0051) as well as BMI; 23.5% of patients > 70 years and 38.9% of the obese men who had TT within the reference range were, in fact, hypogonadal. CONCLUSION Especially in obese men and in those > 70 years old, SHBG dosage is important to calculate FT levels and diagnose hypogonadism.
E-Commerce Innovations in Jordan: Theoretical Model Development and Implications for Small Businesses

Electronic commerce (EC) adoption in small to medium-sized enterprises (SMEs) in developing countries (DC) is confronted with different difficulties. These challenges emanate from the SME itself and from micro and macro forces. By developing an adoption and diffusion model, this research endeavors to investigate the depth of the EC phenomenon in SMEs in developing countries represented here by the case of Jordan. Jordan represents an exemplary case to follow in the region due to its human capital capabilities and leadership in embracing various initiatives and novelties. The research findings and the emerging implications suggested the weakness of the EC phenomenon in the cases and pointed to a unique perspective concerning the adoption context of the SMEs in Jordan. These issues are discussed in this research raising different determinants, SME’s specifics, and theoretical and professional contributions and implications.
Ozone therapy in periodontics

Gingival and Periodontal diseases represent a major concern both in dentistry and medicine. The majority of the contributing factors and causes in the etiology of these diseases are reduced or treated with ozone in all its application forms (gas, water, oil). The beneficial biological effects of ozone, its anti-microbial activity, oxidation of bio-molecules precursors and microbial toxins implicated in periodontal diseases and its healing and tissue regeneration properties, make the use of ozone well indicated in all stages of gingival and periodontal diseases. The primary objective of this article is to provide a general review about the clinical applications of ozone in periodontics. The secondary objective is to summarize the available in vitro and in vivo studies in Periodontics in which ozone has been used. This objective would be of importance to future researchers in terms of what has been tried and what the potentials are for the clinical application of ozone in Periodontics.
The Genome Sequence of Polymorphum gilvum SL003B-26A1T Reveals Its Genetic Basis for Crude Oil Degradation and Adaptation to the Saline Soil

Polymorphum gilvum SL003B-26A1T is the type strain of a novel species in the recently published novel genus Polymorphum isolated from saline soil contaminated with crude oil. It is capable of using crude oil as the sole carbon and energy source and can adapt to saline soil at a temperature of 45°C. The Polymorphum gilvum genome provides a genetic basis for understanding how the strain could degrade crude oil and adapt to a saline environment. Genome analysis revealed the versatility of the strain for emulsifying crude oil, metabolizing aromatic compounds (a characteristic specific to the Polymorphum gilvum genome in comparison with other known genomes of oil-degrading bacteria), as well as possibly metabolizing n-alkanes through the LadA pathway. In addition, COG analysis revealed Polymorphum gilvum SL003B-26A1T has significantly higher abundances of the proteins responsible for cell motility, lipid transport and metabolism, and secondary metabolite biosynthesis, transport and catabolism than the average levels found in all other genomes sequenced thus far, but lower abundances of the proteins responsible for carbohydrate transport and metabolism, defense mechanisms, and translation than the average levels. These traits support the adaptability of Polymorphum gilvum to a crude oil-contaminated saline environment. The Polymorphum gilvum genome could serve as a platform for further study of oil-degrading microorganisms for bioremediation and microbial-enhanced oil recovery in harsh saline environments.
Ballerina: Automatic generation and clustering of efficient random unit tests for multithreaded code

Testing multithreaded code is hard and expensive. A multithreaded unit test creates two or more threads, each executing one or more methods on shared objects of the class under test. Such unit tests can be generated at random, but basic random generation produces tests that are either slow or do not trigger concurrency bugs. Worse, such tests have many false alarms, which require human effort to filter out. We present Ballerina, a novel technique for automated random generation of efficient multithreaded tests that effectively trigger concurrency bugs. Ballerina makes tests efficient by having only two threads, each executing a single, randomly selected method. Ballerina increases chances that such simple parallel code finds bugs by appending it to more complex, randomly generated sequential code. We also propose a clustering technique to reduce the manual effort in inspecting failures of automatically generated multithreaded tests. We evaluate Ballerina on 14 real-world bugs from six popular codebases: Groovy, JDK, JFreeChart, Apache Log4j, Apache Lucene, and Apache Pool. The experiments show that tests generated by Ballerina find bugs on average 2×-10× faster than basic random generation, and our clustering technique reduces the number of inspected failures on average 4×-8×. Using Ballerina, we found three previously unknown bugs, two of which were already confirmed and fixed.
Degradation of halogenated aliphatic compounds by Xanthobacter autotrophicus GJ10

A bacterium that is able to utilize a number of halogenated short-chain hydrocarbons and halogenated carboxylic acids as sole carbon source for growth was identified as a strain of Xanthobacter autotrophicus. The organism constitutively produces two different dehalogenases. One enzyme is specific for halogenated alkanes, whereas the other, which is more heat stable and has a higher pH optimum, is specific for halogenated carboxylic acids. Haloalkanes were hydrolyzed in cell extracts to produce alcohols and halide ions, and a route for the metabolism of 1,2-dichlorethane is proposed. Both dehalogenases show a broad substrate specificity, allowing the degradation of bromine- and chlorine-substituted organic compounds. The results show that X. autotrophicus may play a role in the degradation of organochlorine compounds and that hydrolytic dehalogenases may be involved in the microbial metabolism of short-chain halogenated hydrocarbons in microorganisms.
Confidential: Not for Distribution. Submitted to Iop Publishing for Peer Review an Inverse Electromagnetic Scattering Problem for Cavity an Inverse Electromagnetic Scattering Problem for Cavity 2

We consider the inverse electromagnetic scattering problem of determining the shape of a perfectly conducting cavity from measurement of scattered electric field due to electric dipole sources on a surface inside the cavity. We prove a reciprocity relation for the scattered electric field and a uniqueness theorem for the inverse problem. Then the near field linear sampling method is employed to reconstruct the shape of the cavity. Preliminary numerical examples are provided to show the viability of the method.
Impact of Feedback and Side-Information on the Asymptotic Capacity of Single-Input Multiple-Output Fading Channels With Memory

An analytic expression for the asymptotic capacity of noncoherent single-input multiple-output regular fading channels with memory and with partial receiver side information is derived and is shown to remain unchanged by causal or acausal side information at the transmitter and by a noiseless feedback link. In particular, the corresponding fading numbers are identical. Furthermore, the asymptotic capacity of a single-input single-output nonregular Gaussian fading channel with memory is investigated, and it is shown that the prelog is unaffected by noiseless feedback.
Giant cell tumor of bone: A clinicopathologic study of prognostic factors

Forty‐seven cases of giant cell tumor of bone were clini‐copathologically reviewed to determine any useful prognostic factors. Disease recurred In 11 cases. Eight of these cases had initially been treated with lntracapsular piecemeal excision and three cases had been treated with wide excision. Nine of the 11 cases were classified as Grade III, two cases as Grade II, and one case as Grade II + fracture according to Campanacci's radiographic grading system. lntracapsularly excised cases had a high recurrence rate (47.1%). Metastasis to the lung occurred in three cases, each of which had been classified as Grade III. Although the radiographic Grade did not correlate wlth the rate of lung metastasis or recurrence, cases that metastasized to the lung or recurred tended to be radiographically aggressive. Disease recurred in eight of 24 Grade III cases; but in only two of 12 Grade II cases, in one of five Grade II + fracture cases, and none of six Grade I cases. p53 Was expressed by mononuclear stromal cells in SIX cases. Disease recurred In four and lung metastasis occurred In three of these cases. p53 Expression correlated wlth rates of lung metastasis and recurrence. R was concluded that cases in which p53 is expressed have a high potential for lung metastasis and recurrence.
Solution of the H∞ optimal linear filtering problem for discrete-time systems

The solution of l/sub 2/ (minimum variance) and H/sub infinity / estimation problems is considered using a polynomial systems approach. The results for the l/sub 2/ filtering problem, which corresponds with Wiener or Kalman filtering/prediction, are first presented in polynomial matrix form. Attention then turns to the solution of the H/sub infinity / estimation problem for scalar systems. Numerous examples are presented to illustrate the computational procedures. The two types of estimator are appropriate to very different estimation problems and the new H/sub infinity / devices should be valuable in certain application areas. >
Understanding the tribological interactions between plantar skin and sock textiles through the development of biofidelic test-beds

Foot friction blisters are one of the most common dermatological injuries experienced by those actively involved in outdoor physical pursuits. The frictional interaction between the human skin and textile fabric is acknowledged as being an important aspect in blister development. Despite growing research in this area, relatively little is known about the friction interaction between plantar skin and textiles. The ultimate aim of this thesis is to achieve enhanced understanding of the complex tribological interactions between human plantar skin and sock textiles. The first part of this thesis primarily focusses on experimental studies conducted on the sock-insole and skin-sock interfaces. Due to the lack of existing standard testing protocols, novel testing protocols were developed and used as a standard testing procedure throughout the experimental studies. The friction study on the entire plantar region was conducted in dry textile conditions whereas the friction study on the plantar aspect of the first metatarsal head (1MTH) was carried out in three significantly different moisture conditions (dry, low moisture and wet). Findings gained from a friction study on the 1MTH region of the foot were then used for validations in the second half of this thesis which concerns the development of a range of prototype biofidelic test-beds to mimic the frictional behaviour of 1MTH region. A set of prototype biofidelic test-beds were developed after considering the appropriate geometry, materials and manufacturing processes. Each test-bed is a two-layer polymer-based physical skin model, with the outer layer representing the epidermal dermal tissue and the inner layer representing the dermal subcutaneous tissues. A steel hemisphere was also embedded within the test-bed to simulate the 1MTH bone. Nine test-beds of differing inner Young’s modulus were made with four of them having texture on their surface layer, obtained from a mould of an actual human foot. All test-beds were subjected to deformation and friction tests in order to validate their performances in the respective aspects, when compared with data obtained from human testing. It is hoped that the understanding gained from the study will close the gaps in the existing knowledge of plantar skin – sock textile friction which can be applied into future foot friction blister studies.
Plasticity of metallic nanostructures : molecular dynamics simulations

During high speed cutting processes, metals are subject to high strains and strain rates. The dynamic nature of the deformation during high speed cutting makes it difficult to detect atomic scale deformation mechanisms experimentally. Atomic scale plasticity behaviour is often studied using various micromachining techniques such as micropillar compression testing, nanoindentation, and nanoscratching. However, strain rates in micromachining experiments are far lower than those seen during high speed cutting. Atomistic simulations can be used to study high strain rate plasticity at nanometre length scales. In this thesis, we present results from molecular dynamics simulations of plasticity in nanostructures. Results from simulations of uniaxial strain of both bcc and fcc nanopillars are presented. We find that the outcomes of these uniaxial strain simulations depend sensitively on the initial configurations of the systems. In particular, the choice of crystallographic surfaces on the faces of the pillars and the means by which strain is implemented in the simulations can affect the simulation results. We find that the twinning anti-twinning asymmetry in bcc materials causes nanopillars to deform by dislocation glide in compression and by twinning in tension. This explains the compression tension asymmetry reported experimentally in bcc micropillars. We find that deformation is mediated by glide of shockley partials in fcc pillars for compressive and tensile strains. Simulations of pure shear of nanocrystalline Fe are also presented. We find a change in deformation mechanisms for this system when at high temperatures. At low temperatures, plasticity is mediated in part by dislocation glide and twinning. However, at temperatures above 1200K the deformation is dominated by grain boundary sliding, recrystallization, and amorphization.
Thermally-fair demand response for district heating and cooling (DHC) networks

District heating and cooling networks (DHCs) are complex thermal grids wherein a centrally heated/cooled fluid is circulated through a network of pipes and heat exchangers to meet the heating/cooling needs of residential and commercial buildings. Several factors can hinder efficiencies and impartial distribution of energy among customers in these networks. These include varying levels of building insulation, distance of individual buildings from the central energy source, and thermal losses in network pipes. Moreover, shortage of energy at the central energy source and extreme weather conditions can exacerbate these issues, leading to differing levels of thermal comfort and customer disgruntlement in the long run. In this paper, we propose and study a demand response scheme that attempts to ensure thermal fairness among end-use energy consumers in modern thermal grids. We develop optimization formulations based on thermodynamic models of DHCs, which determine optimal heat inflow/thermostat settings for individual buildings in order to achieve targeted thermal fairness across the network. Our experimental results using physics based models for DHC networks show that it is possible to achieve targeted thermal fairness based social welfare objectives in the DHC network by controlling network parameters such as mass flow rates of water to the consumer premises and the supply water temperature.
B-mode versus A-mode ultrasonographic measurements of mucosal thickness in vivo.

OBJECTIVE The objective of this study was to compare the measurement accuracy of A-mode and B-mode ultrasonographic assessments of palatal masticatory mucosal thickness in vivo. STUDY DESIGN Thickness of palatal masticatory mucosa in the molar region of 50 volunteers was measured once with a B-mode ultrasound device (10 MHz) combined with a standoff for intraoral applications. At identical reading points thickness was also assessed with an A-mode device (5 replicates) and by needle probing for determination of true thickness. RESULTS On average true thickness ranged between 2.9 and 3.3 mm (95% confidence intervals; median, 3.1 mm). B-mode ultrasonography overestimated truth by 0.19 mm (median) and differed significantly from truth (P =.008), whereas A-mode ultrasonography slightly underestimated true thickness by -0.05 mm (median). Limits of agreement were wider for A-mode ultrasonography (2.00 mm) than for B-mode ultrasonography (0.88 mm). CONCLUSIONS Because accuracy of 0.2 mm is acceptable for many clinical indications, B-mode and A-mode yield sufficient accuracy for measurements of mucosal thickness.