Functional and radiological outcomes of distal humerus fractures treated with pre-contoured locking compression plate

<p><strong>Background: </strong>Distal humerus intra-articular fractures are one of the complicated fractures managed by orthopaedic surgeons. We did a prospective and a retrospective study on 21 patients with these fractures treated with pre-contoured locking compression plate.</p><p><strong>Methods: </strong>The<strong> </strong>21 patients in this series were followed for a minimum of 1 year. The prospective study cases were followed at 3 months, 6 months and annually. The rating system of the Mayo elbow functional scoring system was used. The radiological evaluation was done using standard AP and lateral views.<strong></strong></p><p><strong>Results: </strong>We had 14 patients with range of motion of 50-100 degrees. There was only one patient with range of motion of &lt;50 degrees. 6 patients had the maximum range motion of &gt;100 degrees. We had 6 (23.57%) excellent, 9 (42.85%) good, 5 (23.80%) fair and 1 (4.7%) poor in the Mayo elbow scoring at the end of 1 year. We were able to compare our outcomes with a study done by Kumar et al done in 2017. They had 27 (89.66%) of excellent and good results as opposed to 27 (79.4%) in our study. Out of 21 patients in our study 17(80.95%) patients had good 11 (52.5%) / excellent 6 (28.5%) results. This was comparable with Jupiter et al. His study of 34 patients 26 (79.40/0) patients showed good 14 (41%) / excellent 13 (38.4%) result.<strong></strong></p><p><strong>Conclusions: </strong>Pre-contoured locking compression plate appears to be technically an ideal implant for comminuted osteoporotic bone providing an angle stable construct.</p>

Deployment of the C-band radar Poldirad on Barbados during EUREC⁴A

The German polarimetric C-band weather radar Poldirad (Polarization Diversity Radar) was deployed for the international field campaign EUREC4A (Elucidating the role of clouds–circulation coupling in climate) on the island of Barbados where it was operated from February until August 2020. Focus of the installation was monitoring clouds and precipitation in the trade wind region east of Barbados. Different scanning modes were used with a temporal sequence of 5 min and a maximum range of 375 km. In addition to built-in quality control performed by the radar signal processor, it was found that the copoloar correlation coefficient ρHV can be used to remove contamination of radar products by sea clutter. Radar images were available in real time for all campaign participants and aboard research aircraft. Examples of mesoscale precipitation patterns, rain rate accumulation, diurnal cycle, and vertical distribution are given to show the potential of the radar measurements for further studies on the life cycle of precipitating shallow cumulus clouds and other related aspects. Poldirad data from the EUREC4A campaign are available on the EUREC4A AERIS database: https://doi.org/10.25326/218 (Hagen et al., 2021a) for raw data and https://doi.org/10.25326/217 (Hagen et al., 2021b) for gridded data.

Design and Analysis of VTOL Operated Intercity Electrical Vehicle for Urban Air Mobility

This paper discusses the conceptual design of an intercity electrical vertical take-off-and-landing aircraft. A literature survey of existing eVTOL aircrafts, configuration selection, initial sizing, weight estimation, modelling and analysis was conducted. The present intercity eVTOL aircraft has the capability to carry four passengers along with one pilot for a distance of 500 km. Two specific aircraft modes, such as air-taxi and air-cargo mode, are considered in the present design. Market entry is predicted before 2031. Subsequently, innovative technologies are incorporated into the design. The present design features an aerodynamically shaped fuselage, tapered wing and a V-tail design. It can carry a nominal payload of 500 kg to a maximum range of 500 km at a cruise speed of Mach 0.168. The present eVTOL is comprised of a 5 m-long fuselage and an 11 m wingspan. It utilizes six tilt-rotor propeller engines. The maximum take-off weight and empty weight are 1755 kg and 1255 kg, respectively. The unit price is expected to be between USD 14.83 and 17.36 million. This aircraft has an aesthetically pleasing, intelligent and feasible design.

Social-demination factor and practice youth in Russia and Saratov region

The article on the results of sociological studies conducted in Saratov and Russia reveals the socio-demographic factors of the reproductive attitudes of young people. The analysis of the data revealed that with age the acceptable and appropriate period of birth of the first child increases, the level of childbearing in the reproductive practices of young people increases, and the responsible attitude towards the appearance of children increases. However, the majority of young people (57.3%) do not consider children as a guarantee of personal, family happiness. At the same time, decisions about contraception, pregnancy, child birth and the intervals between births are more often assigned to girls. Official registration of marriage is not a prerequisite for the birth of children, which contributes to an increase in the rate of extramarital fertility. However, the stability of the marital status contributes to the implementation of the traditional motivation for the appearance of children at the mutual desire of the spouses. The more children had parents, the more desirable and expected children in young people, but within the maximum range of 2–3 children. Parents’ large children are not transferred to children in the same amount. Young people transpose them within the framework of mostly childlessness. At the same time, she often counts on the help of the older generation in the care and upbringing of children.

Field Test of Superheater Pipes Vibration Caused by Sound Energy in the 235 MWe Circulating Fluidized Bed Boiler

This paper presents the results of measurements of vibrations of the pipes of the steam superheater installed in the convection pass of the 235 MWe Circulating Fluidized Bed boiler (CFB) induced using sonic soot blowers of the Nirafon NI-100 type. The measurements were made using two ICP Triaxial 356A16 accelerometers allowing the analysis of accelerations in the maximum range of ±490 m/s2. Simultaneously with vibration measurements, the sound pressure level was recorded using the G.R.A.S. 40BH high-pressure microphone. The measurements and spectral analysis of the recorded signals showed that the acoustic wave of 148 dB is safe for the steam superheater pipes causing vibrations of maximum amplitude not exceeding 1 mm. The field tests confirmed the supposition that the dominant mechanism for cleaning the surfaces of the superheater’s heating pipes are not pipe vibrations, but the breakage of cohesion forces between dust particles.

Analysis of Energy Utilization and Losses for Jet-Propelled Vehicles

The global control volume-based energy utilization balance for an aerospace vehicle is extended to allow for the analysis of jet-propelled vehicles. The methodology is first developed for analyzing the energy utilization and entropy generation characteristics of jet engines without airframe considerations. This methodology, when combined with separate energy utilization analysis for an unpowered airframe, allows for the assessment of a powered vehicle. Wake entropy generation for a powered vehicle is shown to be the summation of the wake entropy generation associated with the propulsion system (no airframe) and the unpowered airframe. The fundamental relationship between overall entropy generation and the flight conditions required for maximum range and endurance of a powered vehicle are also derived. Example energy utilization results obtained for a modeled turbojet engine in off-design operation are provided; wake and engine component entropy generation characteristics are directly related to engine operation and flight conditions. This engine model is then integrated with a legacy (twin-engine) Northrop F-5E Tiger II airframe. The overall entropy generation temporal rate for the vehicle is minimized, as predicted by our analysis, at flight conditions corresponding to maximum endurance. For flight conditions corresponding to maximum range, the overall entropy spatial rate is minimized.

The DESIGN AND DEVELOPMENT OF EFFECTIVE DISTANCE MEASUREMENT ON BOLAWRAP EQUIPMENT PERSONNEL IN PERFORMING TASKS

- Various threats that occur in the field are a problem for individuals who are faced with human rights law where personnel must make decisions quickly and accurately, the innovation of the Bola wrap weapon can paralyze the enemy without injuring the enemy by firing Kevlar ropes to bind the enemy unable to move optimally. The researcher used the experimental method to get the results that confirm the causal relationship between the variables designed, research and develop a basic circuit by determining the effective firing range of the Bola wrap, we use the Sharp Gp2y0a710k0f sensor as an effective sensor measuring distance with a maximum range of 550 cm, the distance detected by the Sharp Gp2y0a710k0f sensor. will be processed by Arduino nano as a programming controller whose output will be displayed on the Oled LCD according to the Sharp Gp2y0a710k0f sensor in the form of a light emitting diode (LED) as an indicator, the solenoid will open the trigger with an effective firing range, and laser as a point shot. From the target, the Bola wrap weapon uses 9mm caliber munitions as a Kevlar rope projectile amplifier to bind enemies or rebels, from the results of the research it can open a predetermined lock between a range of 200 cm - 500 cm which is displayed on the Oled LCD, and the green indicator light and the Solenoid are open. The trigger will help optimally in shooting Bola wrap to paralyze enemies or rebels from moving optimally, Bola wrap weapons are used as personnel equipment in carrying out the main tasks of achieving TNI tasks effectively and optimally.

Formation of the demand for contraceptives using the Van Westendorp method based on establishing consumer value

One of the main indicators of the consumer value of a product is the price. Its controversial idealistic and materialistic basis is aimed at securing the interests of two opposites: producer-seller and buyer. Correctly made pricing decisions, taking into account the requirements of both players in the pharmaceutical market, will effectively regulate the processes of the pharmaceutical business and the supply system. The aim: approbation of the Van Westendorp method on the example of contraceptives; establishing their consumer value for further rational decision-making regarding the improvement of the system for providing contraceptives to Ukrainian female consumers. Materials and methods. The research used the marketing Van Westendorp method based on surveying a quota sample of women of reproductive age from one of the Ukrainian regions. The main calculations were performed with MS Excel 2010 software. Results. The survey of 420 women enabled to set the maximum range of readiness to pay (the point of maximum cheapness and high cost) for the most advanced pharmaceutical types of contraception (hormonal, non-hormonal and medical products) in the age and income quotas. It was established that the price sensitivity depends on social and economic indicators. Conclusions. The established maximal ranges of willingness to pay are well below market prices for contraceptives. The exception is cheap and widespread contraception (aerosol and male condom), which confirms the need to use marketing research methods to meet the needs of the female consumer.

Methods of Precise Distance Measurements for Laser Rangefinders with Digital Acquisition of Signals

The article presents methods of long range distance measurements using pulsed lasers and the Time of Flight principle. Various algorithms of laser distance measurements with digital acquisition of echo pulses (acquisition of a signal’s full waveform) are presented. The main focus of work is concentrated on the method of distance measurements developed by the authors. With this method, during laboratory trials, a total measurement error of one centimeter was achieved using a 905 nm pulsed laser diode and pulse width of 39 ns. The maximum range of measurements with such high precision is limited only by a signal to noise ratio, duration of measurements and atmospheric conditions. All algorithms were implemented in a laser rangefinder module developed by the authors. Simulations and laboratory experiments were conducted and algorithm’s accuracy and precision were tested for various SNR conditions and changing distances.