Search

Ventricular septal rupture is an extremely rare sequelae of blunt chest trauma, and is mostly diagnosed postmortem. We present a case of a large isolated traumatic ventricular septal rupture after a suicide attempt by jumping from a height of 5 stories, which was successfully treated with surgical closure. (Level of Difficulty: Intermediate.), Central Illustration

The ecological reasons for variation in avian migration, with some populations migrating across thousands of kilometres between breeding and non-breeding areas with one or few refuelling stops, in contrast to others that stop more often, remain to be pinned down. Red Knots Calidris canutus are a textbook example of a shorebird species that makes long migrations with only a few stops. Recognizing that such behaviours are not necessarily species-specific but determined by ecological context, we here provide a description of the migrations of a relatively recently described subspecies (piersmai). Based on data from tagging of Red Knots on the terminal non-breeding grounds in northwest Australia with 4.5- and 2.5-g solar-powered Platform Terminal Transmitters (PTTs) and 1.0-g geolocators, we obtained information on 19 route-records of 17 individuals, resulting in seven complete return migrations. We confirm published evidence that Red Knots of the piersmai subspecies migrate from NW Australia and breed on the New Siberian Islands in the Russian Arctic and that they stage along the coasts of southeastern Asia, especially in the northern Yellow Sea in China. Red Knots arrived on the tundra breeding grounds from 8 June onwards. Southward departures mainly occurred in the last week of July and the first week of August. We documented six non-stop flights of over c. 5000 km (with a maximum of 6500 km, lasting 6.6 days). Nevertheless, rather than staging at a single location for multiple weeks halfway during migration, piersmai-knots made several stops of up to a week. This was especially evident during northward migration, when birds often stopped along the way in southeast Asia and 'hugged' the coast of China, thus flying an additional 1000-1500 km compared with the shortest possible (great circle route) flights between NW Australia and the Yellow Sea. The birds staged longest in areas in northern China, along the shores of Bohai Bay and upper Liaodong Bay, where the bivalve Potamocorbula laevis, known as a particularly suitable food for Red Knots, was present. The use of multiple food-rich stopping sites during northward migration by piersmai is atypical among subspecies of Red Knots. Although piersmai apparently has the benefit of multiple suitable stopping areas along the flyway, it is a subspecies in decline and their mortality away from the NW Australian non-breeding grounds has been elevated.

The vibration excited by gas-liquid multiphase flow endangers the structural instability and fatigue life of subsea jumpers due to the cyclic behavior. In this paper, the multiphase flow-induced vibration (MFIV) of an M-shaped jumper is numerically investigated using a two-way fluid-structure interaction (FSI) approach. The effect of gas-liquid ratios (β) ranging from 1:1 to 1:5 is examined with a fixed flow velocity of 3 m/s, and the influence of mixture velocity (vm) in the range 2–6 m/s is evaluated with a gas-liquid ratio of 1:1. The numerical results reveal the detailed flow evolution of the gas-liquid mixture along the jumper. With inflow of slugs, the pattern successively experiences the slug flow, wavy flow, imperfect annular flow, stratified flow, churn flow, wavy flow and imperfect annular flow in the pipe segments when β = 1:1 and vm = 3 m/s. This development of mixture flow is significantly altered by changing either the gas-liquid ratio or the mixture velocity. In comparison with the flow evolution in a stationary jumper, the pattern in each pipe segment is not been substantially changed due to the limited response amplitude of order of 10−3D (D is the outer diameter of the jumper). Due to the complex flow evolution, the pressure acting on the six bends of the jumper fluctuate in multiple frequencies. Nevertheless, the dominant fluctuation frequency is approximately equal to the inflow slug frequency. Moreover, the inflow slug frequency also dominates the in-plane response of the jumper. Both the in-plane and out-of-plane responses of the jumper exhibit spatial-temporal variation characteristics. The most vigorous oscillation occurs at the midspan of the jumper. As β is reduced, the out-of-plane response of the jumper midspan is suppressed while the in-plane response is enhanced. In contrast, both the in-plane and out-of-plane oscillations of the jumper midspan are amplified with the increase of vm.

This manuscript presents the design and implementation of a passive, modular, computational ultra high frequency (UHF) radio frequency identification (RFID) research platform. The proposed platform consists of a software defined radio (SDR) reader and a modular UHF RFID tag. Such a tag can be subdivided into a number of modules (e.g., Modulator, Rectifier, etc.), which have been separated and optimized for easy connectability using sub-miniature A (SMA) connectors and standard jumper wires. Experimental results of module specific parameters show the accessibility of each section and prove the platform’s value for designing novel UHF RFID solutions.

PurposeValues of parameters such as temperature, humidity, number of plastic products and the location of plastic injection moulds are required to determine the efficiency of plastic injection moulds with a view to improving the quality of the outputs. This article determined the appropriate sensors for the measurement of these essential parameters in the most suitable form of representation of the data to aid a proficient analysis of the data.Design/methodology/approachThe outputs of these sensors were obtained by connecting the sensors to the general-purpose input/output (GPIO) pins of a Raspberry Pi and writing a Python programme for the connected GPIO pins. The values of the outputs of these sensors were represented in a graphical form. The connection of the Raspberry Pi and the sensors were done with a full-sized breadboard and jumper wires. A computer-aided design (CAD) of the connections was produced using Fritzing software.FindingsThe appropriate sensors determined are MLX90614 infrared thermometer sensor, DHT11 humidity sensor, pixy2 vision sensor and Neo-6m GPS sensor. This study proposed that the sensors analytic system be applied on an industrial plastic injection mould to measure and display the various parameters of the injection moulds for the purpose of understanding and improving the performance of the injection mouldOriginality/valueAn electronic system that provides the continuous values of essential parameters of a plastic injection mould in operation.

Purpose The purpose of this study was to examine the difference and consistency of kinematic variables for each athlete by selecting the official records of the world's elite female triple jumpers to evaluate the performance level. Methods Three athletes who won the prizes at the World Championships Daegu 2011 Women's Triple Jump were selected as the study subjects, and only the successful trials were used for analysis. Pearson's correlation analysis was conducted with the kinematic variables in the hop, step, and jump phase, respectively. Also, kinematic variables with statistically significant correlations between braking time and pushing time and related variables were described separately. The duty factor and support factor for the hop, step, and jump of support phases were calculated. Results The successful trials rate were 66.7% for Olha, 50% for Olga, and 83.3% for Caterine. In the last three stride distances of the approach run, Olha and Caterine had a “medium-long-short” pattern and Olga had a “long-short-medium” pattern. There was no difference in the duty factor value between hop and jump phases in the ‘hop-dominate’ technique type, but there was a difference in the jump phase in the ‘balance’ technique type, and the duty factor value in the step of both technique types was greater than that of hop and jump phases. As for the percentage of the support factor, Olha and Caterine had a characteristic that the percentage of braking time in step and jump phases was opposite. On the other hand, Olga had the same percentage for the hop and step phase, and a smaller percentage for the jump phase. Conclusion To increase the accuracy of the board touch-down, maintain a certain last stride(1SL) depending on the technique type. This consistency of the approach run increases reduces distance loss on the take-off board and increases the successful rate of each trial. The duty factor can judge both the performance level and the technique type of triple jump, and the support factor is a variable that can classify the technique types of hop, step, and jump phases. If both the relative time required for the triple jump and the variability of the support time(braking and pushing) for each phase are constant, the difference in records by trial will be small.

Purpose This study was to analyze and compare series of muscle activities during plank exercises with use of togu-jumper. Methods Ten male subjects (age 26.9±1.7 yrs, height 172.2±5.7 cm, weight 66.5±7.5 kg) who have no musculoskeletal disorder with one's upper or lower limb were selected as subjects. To analyze and compare series of muscle activity, five of surface EMG electrodes were attached to the upper rectus abdominis (URA), lower rectus abdominis (LRA), external abdominal oblique (EO), erector spinae (ES) and gluteus maximus (GM). Each subject did plank exercise on stable support surfaces (normal surfaces) and unstable support surfaces with the togu-jumper. For each dependent variable, one-way ANOVA with repeated measures were performed with significance level p

Technology is something that was created to help and facilitate human work in various aspects needed for the survival and comfort of life in the company. All goods produced will be counted before distribution. The calculation and input of goods in PT Winner Pratama has not been done automatically, so the researchers solved the solution by creating an automated item counting system based on the Internet of Things and Website. This system is designed using Infrared (IR) Sensor, Nodemcu esp8266, Breadboard, Jumper cable, Buzzer, Push Button, Lcd I2c, Database, and Dcmotor. With the prototype method to simulate this system before it is applied in the production field to find out how the system works. And based on testing infrared sensors as much as 10x by means of an object closer to the sensor with a distance of 2-6 cm successfully, this system can help employees to find out the number of items automatically generated every day, without having to do the calculations manually. In addition to automatic counting, the system also performs input automatically and the data is stored in a database.

Background Jumper’s knee is a highly prevalent tendon condition in volleyball players population. Research on clinical effects of tendon dry needling in jumper’s knee is scarce. Therefore, the aim of this study was to present clinical effects of ultrasound-guided dry needling of quadricipital tendon in a patient with jumper’s knee. Methods A 23-years-old volleyball player, who experienced pain in quadricipital tendon for 5 months, was presented and treated by ultrasound-guided dry needling of quadricipital tendon with one session. Slightly limited knee flexion range of motion, high scores in Visual Analogue Scale (VAS) at rest and during Single-Leg decline Squat test (SLDS) related to high pain intensity, low scores in Victorian Institute of Sport Assessment (VISA-P) scale and Lower Extremity Functional Scale (LEFS) were found. Further examination revealed sensitization of the quadricipital tendon (low pressure pain threshold). Results We found important improvements in VISA-P, LEFS and VAS. Besides, pressure pain threshold and knee flexion during SLDS also showed improvements. Results which were obtained were better in all the variables studied and these recoveries were stable for 6 months. Conclusions Our findings showed improvements in pain and function in medium term and could provide preliminary evidence of beneficial effects of quadricipital tendon dry needling in patients with jumper’s knee. Future studies are needed to clarify our results and compare dry needling with conservative treatments.

Traction current can to impose conductive interference on the railway signalling system, which is also known as unbalanced traction current interference. In the station turnout section, the traction current may cause obvious interference on both receiving apparatus of track circuit and cab signalling apparatus due to the installation of multi-jumpers, wing rails, and insulated joints inside the turnout. This paper analyzes the above structural characteristics of turnouts in depth. By establishing a comprehensive simulation model of one-transmitter and two-receiver track circuit in turnout section and simulating the complete return current path along with traction network–locomotive–rails, the mechanism of traction current conductive interference in the turnout section is then illustrated, using Multisim and MATLAB/Simulink simulation platform. Finally, based on the Analytic Hierarchy Process (AHP), an optimization method of switch jumper setting is studied. The simulation results show that the conductive interference in the turnout section mainly involves two factors: The inherent turnout structure definitely results in different impedance of two rails, and the inductive cab signal is partly bypassed in the turnout center (nose rail). Especially, conductive interference magnitude depends on the jumper location. Therefore, in engineering practice, it is feasible to reduce the interference to a certain degree by reasonable settings of the switch jumper.

Subsea rigid steel spools (spool) are used to connect subsea equipment using diver-less connectors. Spools must meet functional requirements such as pressure, temperature, thermal expansion, environmental load, installation loads, lack of fit (misalignments), etc., yielding numerous loading conditions. The installation accuracy that the installation contractor can achieve is another issue. Thus, it is inevitable that numerous geometries to be investigated and perform several iterations in search of a suitable configuration. The no-burst concept, in conjunction with a High Integrity Pressure Protection (HIPP) system, leads to heavier spool wall thickness, hence less structural flexibility which in turn increases reactions on the subsea connectors, which in turn is transferred to the adjoining equipment. Add to this complexity, the seismic qualification requirement if a jumper is in an earthquake-prone area.

The results from an experimental study of crosstalk interference between twisted pairs of conductors of an electrical wire bundle model are presented. The aim of the study is to determine the crosstalk interference levels in a shielded twisted pair of conductors when there is heterogeneity in the form of a gap between the shield of bundle conductors and the electrical connector body. The studies were carried out on the electrical wire bundle mockup consisting of shielded and unshielded twisted pairs of conductors. The unshielded twisted pair of conductors was used as a source of crosstalk interference. The shielded twisted pair of conductors had a gap between the shield of conductors and the electrical connector body and was a receptor for the crosstalk interference. To study the crosstalk interference levels, the gap length of the shielded twisted pair of conductors was varied. As a result of the study, the crosstalk interference levels for gaps of different lengths were determined. The effect of an electrically conducting connection made using a jumper in the gap between the shield of a twisted pair of conductors and the electrical connector body of the electrical wire bundle mockup on the crosstalk interference levels was studied. A comparative analysis of the results obtained from measurements of the crosstalk interference levels in a shielded twisted pair of conductors with heterogeneities in the form of gaps of different lengths with the crosstalk interference levels in a shielded twisted pair of conductors with a homogeneous shield is carried out. A conclusion about the need to ensure connection of the shields of electrical bundle conductors with the bodies od electrical connectors without gaps has been formulated.

Lower back pain is regarded as one of the most dangerous disabilities that can cause disk degeneration (spinal cord dislocation) for all age groups. In 2017, it was recorded on the Global Burden of Disease Study to have affected individuals in more than 195 countries. Similarly, Lumbar disc herniation is more common in individuals aged 40–69 years than any other age group. This disability causes a great global economic burden involving the loss of money on physical therapy, drugs and primary healthcare. Therefore, in contrast with using drug therapy, the no-drug therapy is perceived to be less expensive with fewer side effects. These processes include acupuncture, exercise therapy, and massage therapy. This research introduces the application of different devices incorporated into one novel smart jacket. This device is comprised of an Arduino ATMEGA 2560 microcontroller containing 54 connectors, a DC12V massage cushion vibrating system, a Bluetooth HC05, an electromyography, a sound sensor module, a medical back strap, a DC fan, jumper wires (used in making the connections between items on the breadboard), and the Arduino header pins and resistors. Comparing our device to modern smart jacket devices applicable in different diseases using specified parameters shows the exceptional attributes of our prototype. It is a cheaper, user-friendly device.

Shoes are one of the human equipment that must always be worn in conditions, including during the rainy season, and conventional shoe drying still faces several challenges, including relying on the help of sunlight to facilitate drying. Shoes are one of the human equipment that must always be worn in conditions, including during the rainy season. The goal of this research is to create a shoe dryer monitoring system using the Node-ed Platform and the Internet of Things. Light, temperature, and humidity are all monitored in shoes. Arduino Uno, NodeMC ESP8266, Breadboard, Jumper Cables (male-to-male, male-to-female, female-to-female), Arduino USB Cable, 2 Channel Relay, Incandescent Lamp, CPU Fan, Servo Motor, DHT11 Sensor, and LDR Sensor are the components needed to make this system. While the software, specifically Ardu, was used, While the software employed, specifically the Arduino IDE, allows the author to program the NodeMCU ESP8266, Arduino Uno, and other hardware components that will be used in this study. To write programs, you'll need a C program editor and compiler. The major component in the implementation of this research is the Node-red platform. The NodeMCU ESP8266 is used as a tool in this shoe dryer monitoring system, which leverages a wireless network architecture. The shoe dryer monitoring system can perform as intended as a result of this research; this tool can monitor light, temperature, and humidity in shoes in real-time, as well as deliver actions in the form of notifications via social media in the form of Telegram.

Jumper tubes are widely used in the field of ocean engineering as a key component of oil and gas transportations. In order to improve the mixing conditions in the offshore pipelines, a blind tee is usually installed upstream of the measuring instrument to replace the elbow connections. The purpose of this research is to study the influence of the blind tees on the internal mixing conditions of the jumper tube. To this end, the three-dimensional flow fields inside the jumper tubes are solved with the Computational Fluid Dynamics (CFD) method, and the internal flow characteristics of the jumper tubes with blind tees installed at different positions are analyzed. The absolute axial vorticity is used to characterize the mixing conditions of the fluid in the jumper, and the vorticities at fifty-nine sections inside the jumper tube are extracted and compared under different configurations. The results show that compared to the traditional jumpers, the cross-sectional vorticity at the position where a blind tee is installed increases by range between 22% and 136%, and the corresponding dissipation speed decreases as well. It also reveals that the effect of installing blind tees at all elbow positions is not as good as that of using a single blind tee to increase the vorticity at some specific positions, especially for the outlet of the jumper tube.

An active subsea field in the Gulf of Mexico has adopted a thermoplastic composite pipe (TCP) water injection jumper for its waterflood upgrade. The jumper assembly is composed of a TCP span attached to steel piping on either end. The TCP spool is lightweight and flexible relative to the traditional steel-only M-shaped subsea jumpers. As such, the flow-induced vibration (FIV) threat from internal fluid flow must be assessed for the intended service. A three-tiered approach is used to assess the level of FIV threat expected in this TCP subsea jumper application. A high-level screening based on widely used industry guidelines indicates a susceptibility to FIV fatigue failure for the steel piping in the TCP jumper assembly. A comprehensive screening based on structural finite element analysis and computational fluid dynamics shows that the vibration levels and stress cycling due to FIV will be acceptable for the intended water injection application and a 30-year design life, when adopting a factor of safety of 10 for subsea service. We evaluate the effect of doubling the length of the steel piping on either end of the TCP span, as a means to increase the overall span of the TCP jumper assembly. Lastly, we draw a comparison between a traditional all-steel M-shaped jumper and the TCP jumper in terms of FIV fatigue life, for the same operating conditions and the same total suspended span.

In subsea pipelines projects, the design of rigid spool and jumper can be a challenging and time-consuming task. The selected spool layout for connecting the pipelines to the subsea structures, including the number of bends and leg lengths, must offer the flexibility to accommodate the pipeline thermal expansion, the pipe-lay target box and misalignments associated with the post-lay survey metrology and spool fabrication. The analysis results are considerably affected by many uncertainties involved. Consequently, a very large amount of calculations is required to assess the full combination of uncertainties and to capture the worst-case scenario. Rather than applying the deterministic solution, this paper uses machine learning prediction to significantly improve the efficiency of the design process. In addition, thanks to the fast predictive model using machine learning algorithms, the uncertainty quantification and propagation analysis using probabilistic statistical method becomes feasible in terms of CPU time and can be incorporated into the design process to evaluate the reliability of the outputs. The latter allows us to perform a systematic probabilistic design by considering a certain level of acceptance on the probability of failure, for example as per DNVGL design code. The machine learning predictive modelling and the reliability analysis based upon the probability distribution of the uncertainties are introduced and explained in this paper. Some project examples are shown to highlight the method’s comprehensive nature and efficient characteristics.

Genes in SARS-CoV-2 and other viruses in the order of Nidovirales are expressed by a process of discontinuous transcription which is distinct from alternative splicing in eukaryotes and is mediated by the viral RNA-dependent RNA polymerase. Here, we introduce the DISCONTINUOUS TRANSCRIPT ASSEMBLYproblem of finding transcripts and their abundances given an alignment of paired-end short reads under a maximum likelihood model that accounts for varying transcript lengths. We show, using simulations, that our method, JUMPER, outperforms existing methods for classical transcript assembly. On short-read data of SARS-CoV-1, SARS-CoV-2 and MERS-CoV samples, we find that JUMPER not only identifies canonical transcripts that are part of the reference transcriptome, but also predicts expression of non-canonical transcripts that are supported by subsequent orthogonal analyses. Moreover, application of JUMPER on samples with and without treatment reveals viral drug response at the transcript level. As such, JUMPER enables detailed analyses of Nidovirales transcriptomes under varying conditions., @melkebir @psashittal et al. develop a graph-based method for the assembly of discontinuous transcripts produced in Coronaviruses and other Nidovirales, enabling the discovery of transcriptional changes missed by existing methods.

Earlier ascending/descending trust spirals were explained by the job-discretion allowed to employees by managers; few studied such spirals as it required bi-directional longitudinal framework. Such a framework used ethnographies of managers who “jumped” from other organizations and suffered gaps of knowledge that curbed their psychological safety for gap-exposing vulnerable involvement in locals’ deliberations required for trust building; mostly they were detached or autocratic and generated descending trust spirals which barred locals’ knowledge-sharing. In their ignorance they used immoral subterfuge, furthered distrust, shaped low-trust cultures, and mismanaged. However, detached/autocratic “jumpers” often managed mediocrely by “riding” on the successes of trusted vulnerably-involved mid-levelers. Only a few “jumpers” generated ascending trust spirals by vulnerable involvement, learned from and with locals, and succeeded by high-trust innovation-prone cultures. Contextual factors helped explain choices of practicing/avoiding vulnerable involvement and generating ascending/ descending trust spirals. Further study of these choices and these factors is suggested.

Background: Patellar tendinopathy (PT) or “jumper's knee” is generally found in active populations that perform jumping activities. Graded exposure of patellar tendon stress through functional exercise has been demonstrated to be effective for the treatment of PT. However, no studies have compared how anterior knee displacement variations during the commonly performed forward step lunge (FSL) affect patellar tendon stress. Methods: Twenty-five subjects (age: 22.69 ± 0.74 years; height: 169.39 ± 6.44 cm; mass: 61.55 ± 9.74 kg) performed 2 variations of an FSL with the anterior knee motion going in front of the toes (FSL-FT) and the knee remaining behind the toes (FSL-BT). Kinematic and kinetic data were used with an inverse-dynamics based static optimization technique to estimate individual muscle forces to determine patellar tendon stress during both lunge techniques. A repeated measures multivariate analysis was used to analyze these data. Results: The peak patellar tendon stress, stress impulse, quadriceps force, knee moment, knee flexion, and ankle dorsiflexion angle were significantly greater (p

The solution of a simulation problem and the analysis of three-dimensional temperature field in a heating element of transformer type are considered. The design of a three-phase heating element with a spatial magnetic system is presented. The features of model construction using ANSYS software package are described. The results of simulation of temperature field in the heating element with the power of 25 kW are shown and analyzed. It is revealed that the temperature field in the area of primary winding is distributed unevenly and there are regions of local overheating. A heat removal from these regions is carried out by two main paths. The heat removal intensity and the distribution of heat fluxes depend on the current density in the jumper, which closes the elements of the secondary winding. Taking this into account, recommendations for selecting the electromagnetic loads in the active parts of the heating element and improving the design of electrical equipment are presented. To justify the modes of operation of the heating element as a part of heating unit of a stand-alone heat-supply system, the interrelation between the flow rate of the heat-transfer agent and the power of the heating element was revealed, which makes it possible to limit the maximum temperature in areas of local overheating and prolong the operation life of electrical equipment.

The purpose of this study was to compare three different methods for the estimation of vertical jump height and to reveal errors in maximum height of the centre of gravity (CG) that emerged. Additionally, the problem of initial values, which are difficult to estimate for squat jumps and drop jumps, was addressed by suggesting a new method for the calculation of CG height of squat and drop jumps. To evaluate and compare the methods used to examine the vertical jump performance, 15 men performed four maximal vertical jumps of three different types: counter movement jump (CMJ), squat jump (SJ) and drop jump (DJ). Kinematic data and the vertical ground reaction force were recorded. Three methods were used for the evaluation of the jumps: flight time method (FT), impulse method based on the energy conservation law (IMP) and the double numerical integration of the ground reaction force (INT). The maximum CG height calculated from three-dimensional (3D) kinematics using automatic infrared (IR) marker tracking (Vicon [Oxford, UK], Plug in Gait model, Davis et al., 1991) was used as reference (golden standard). The results of the 3D kinematic analysis and the double integration of the vertical reaction force did not show significant differences. The jump heights determined by IMP and by FT were too low in relation to the real jump height due to the absence of the CG height at take off. Besides this, the flight time can be manipulated by the jumper, meaning that the flight time method is not suitable for CG height estimation of vertical jumps in scientific studies.