Fluidic Oscillators Mediating Generation of Microbubbles (Survey)

If a gas volume is distributed into many microbubbles of a sub-millimetre size, the total gas/liquid surface becomes very large. This increases overall heat and/or mass transport across the sum of surfaces. The paper discusses several applications in which the use of microbubbles increases efficiency of various processes, especially in wastewater treatment and in growing microorganisms such as algae, yeast, bacteria, or primitive fungi. The problem of microbubble generation by percolation in aerator is their coalescence into larger bubbles, whatever small are the pores in the aerator in which the microbubbles are generated. The solution of this size discrepancy question was found in agitating the gas flow by a fluidic oscillator prior to its injection through the aerator. The oscillator is a no-moving-part device, simple, inexpensive, resistant to external effects like acceleration or heat, and with long maintenance-free working life.

Research Method of Data Deduplication Backup System

In this paper, we've got studied cutting-edge-day backup systems and used a singular technique which facilitates in decreasing the fragmentation trouble. The winning backup tool have lumps of every backup which is probably bodily scattered, which ends up in a very demanding fragmentation trouble. Fragmentation offers upward thrust to 2 kinds of fragmented containers which is probably sparse and out-of-order boxes. Sparse container exacerbates the device simple ordinary overall performance on both restore and rubbish series. Out-of-order packing containers talk to the ones containers which can be accessed commonly at some point of a repair. As a way to lessen the fragmentation trouble we use the antiquity acquainted set of guidelines and stockpile aware filter out. Those help in figuring out the sparse further to the out of order discipline.

IOT Enabled Smart Heart Activity Monitoring Application

Internet of Things (IoT) has drastically changed the functionality of many sectors like health, education, transportation, home, city, etc. Health care underwent a crucial change through IoT, but the major concern is the functionality of the medical devices and their security. Heart disease has become a common problem now days due to smoking and aging. IoT based health care systems are already available but their usage is still a challenge due to their complex structure and deployment of sensors in the patient body. In this paper we propose a novel heart activity monitoring system called SHAM (Smart Heart Activity Monitoring) it monitors the heart activity through a smart watch app. This smart watch monitors the heart activity of the patient if there any irregular activity it notifies the patient and if very critical activity is identified it automatically sends SOS call to the ambulance with GPS coordinates of the patient. The main aim of the proposed system is to make the heartbeat monitoring device simple thereby providing comfort to the patient in its usage and reducing the risk of death.

Design and Implementation of a Walking Stick Aid for Visually Challenged People

Visually challenged people (VCPs) face many difficulties in their routine life. Usually, in many cases, they need to depend upon others, which makes them unconfident in an unfamiliar environment. Thus, in this paper, we present an aid that helps in detecting obstacles and water puddles in their way. This system comprises a walking stick and Android-based applications (APPs). The walking stick is embedded with Raspberry Pi and programmable interface controller (PIC) as a control kernel, sensors, a global position system (GPS) module, and alert-providing components. Sensors help to detect obstacles, and the VCP is informed through vibrations or a buzzer according to the obstacle detected. The GPS module receives the coordinates of the VCP’s location, and the location can be tracked by parents using an APP. Another important APP is used, called an emergency APP, by which the VCP can communicate with parents or friends immediately by just shaking his/her cell phone or pushing the power button four times in 5 s in panic situations. We used fewer components to make the device simple, lighter, and cozy with very good features. This device will help VCPs to live an independent life up to some extent (with security), which ultimately will increase their confidence level in an unknown environment.

Compression anastomotic device

The purpose of this study is to develop and clinical use the new technology of forming a circular compression seam for improvement the surgical results. Materials and methods. The author has proposed a new device – compression anastomotic device (RF patent № 110246). This is device simple, comfortable and reliable. The compression force is created by means of the special steel spring. Compression anastomotic device has 3 types of diameters: 28, 31 and 33 mm, this allows to using them at different diameters anastomosing bodies and throughout the colon. Results. The CAD has been applied in clinical practice in 71 resections for colon cancer: 20 right-sided hemicolectomy, 5 resections of the transverse colon, 12 left-sided hemicolectomy, 17 resection of the sigmoid colon, 6 subtotal colectomy and 11 anterior resections. There were no anastomotic complications. Conclusion. The author has created original device for forming a compression colonic anastomoses and implemented new technology into clinical practice, it helps to prevent the development of postoperative complications.

Finite Element Analysis of Positioning of Pin in Lapidus Procedure

A finite element analysis was carried out to determine the optimum pin placement with the application of mini fixator in Lapidus procedure. Various parameters were considered for analysis like pin diameter, distance from fracture site, number of pins, distance of the rail from the fracture site, effect of width and length of the rail on gap closing, angle of fracture and pin angle. FEMLAB 2.3 is used for both modeling and analysis. A 2D model is constructed with the bone joint consisting of first metatarsal and cuneiform along with the fixation device. The dimensions of the model are taken similar to a prototype model of the foot and mini fixation device. Simple Static analysis is done as a beginning case which will be later developed to dynamic case.