Pulmonary Embolization of Radiolucent Intravenous Cannula: Endovascular Retrieval

Fracture and embolization of peripheral intravenous cannula is very rare. Although endovascular retrieval is the standard of care for most of the embolized intravascular devices, endovascular management of embolized peripheral intravenous cannula is technically difficult due to its radiolucent nature and it is not described previously in the literature. We describe the clinical presentation, imaging findings, and endovascular management in a middle aged male who had fractured peripheral intravenous cannula which was embolized into the pulmonary artery branch. Technical nuances associated with retrieval of this radiolucent little plastic tube have been discussed.

Method to obtain PRP and L-PRP for the use in routine medical practice of orthopedic traumatologist

The paper presents the results of experimental study of two methods for blood processing to obtain platelet-rich plasma (PRP). Due to the widespread clinical use of platelet-rich plasma in orthopedics and traumatology, a differential approach to the use of PRP and leukocyte- and platelet-rich plasma (L-PRP) has become relevant. Most commercial kits for PRP preparation significantly increase the cost of treatment. In addition, the main attention is focused on the concentration of platelets in the final product and the marketing features of a particular kit (separating gel, tube shape, anticoagulant, activator, etc.). The role of leukocytes in the features of the regenerative effect of platelet-rich plasma stays out of focus. The blood of volunteers was processed in two different ways and the cellular composition of the obtained products was analyzed. Sample No. 1 was used as a control for the baseline blood cell composition. Sample No. 2 was centrifuged in a sterile plastic tube, platelet rich plasma was collected manually. Sample No. 3 was centrifuged in a sterile modified syringe, platelet rich plasma was collected using a closed technique by means of connectors together with a rich layer. The results of statistical analysis showed that there were obtained totally different biological products with different concentrations of platelets and leukocytes. The first sample (control) had platelet concentration of (228.69 ± 39.15) × 109/l and leukocyte concentration of (5.18 ± 1.32) × 109/l. In the second sample (tube + manual sampling), platelet concentration was (429.38 ± 79.92) × 109/l and leukocyte concentration — (0.85 ± 0.34) × 109/l. The third sample (syringe plunger + closed vacuum collection) had platelet concentration of (541.15 ± 85.49) × 109/l and leukocytes of (6.56 ± 1.92) × 109/l. The data are given without regard to –12.5% deviation on dilution with citrate dextrose. As the result of the work, orthopedic traumatologists can use the simplest non-commercial methods for obtaining PRP and L-PRP in their practice depending on nosology and clinical tasks.

Using of Different Kinds of Aromatic Oils with Feeding on Some Productive Traits in Awassi Lambs

This study was conducted in the animal farm of the College of Veterinary Medicine/Tikrit University for the period from 01/10/2019 to 31/12/2019 to investigate the effect of using different kinds of aromatic oils on some productive traits in Awassi lambs. Twenty Awassi lambs aged between 5-6 month and divided according to weight into four group and hens in an individual cages, the study lasted for 90 day. concentrate diet provided to the lambs at 3% of their body weight. the treatment were as follows : T1 was a control group without drenching, T2 drenched with sage oil, T3 drenched with clove oil and T4 drenched with laurel oil. drenching process was done manually by using water-soluble capsules each one contain 500 mg of oil, each lambs was given one capsule/day. which is pushed by using a plastic tube in to the beginning of esophagus. to study the effect of these oils on weight characteristics, body dimensions and wool characteristics. The results showed that there was no significant effect of the treatments on body weight characteristics. As for the measurements of the body dimensions after a month of the experiment, laurel oil, clove oil and sage oil had a significant effect on the chest circumference, the width of the body at the front, the width of the body at the back and BCS, and also the parameters had a significant effect on the measurements of body dimensions At the end of the experiment, the characteristics of the height of the body at the front, the height of the body at the back, the circumference of the chest, and the length of the body. As for the characteristics of the wool, the oils used led to a decrease in the percentage of clean wool and an increase in the length of the fiber compared to the control.

An opinion on the interpretation of social release in rats

This commentary concerns a controversial animal model in rodent social release research wherein one rat releases another rat from entrapment in a plastic tube. Release from the plastic tube has been proposed as a model to study empathically motivated behaviour. However, empathic motivations have been contested by others who have provided evidence for social reinforcement motivating release behaviour. Furthermore, helping, or other forms of pro-social behaviour could exist independent of empathy or empathetic motivation and the stimuli occasioning this helping behaviour are not known. In addition, there is a dearth in the citations of published studies whose results fail to support this model. In other words, the controversial aspect of the rodent social release model is often overlooked. This controversy is described in the current opinion piece.

Robot Operations for Pine Tree Resin Collection

A robotic technology consisting of an industrial robot mounted on an autonomous rover used to tap slash pine trees and collect their oleoresin for processing is introduced, and the technological challenges related to the robotic operations are discussed in detail. Unlike the case of industrial automated manufacturing systems where the relative position between the tool and workpiece can be controlled within a few hundredths of a millimeter accuracy, when used in highly unstructured environments characteristic to forestry or agriculture, the positioning accuracy between the industrial robot and the target on which it operates can be much lower than the accuracy required for the operation of the industrial robot. The paper focuses on presenting the robotic operations necessary for drilling three converging boreholes in the pine tree, spraying the boreholes with chemicals, inserting a plastic tube with pre-attached collection bag in one borehole and inserting two plugs in other two boreholes. The challenges related to performing these robotic operations in conditions of large variations in the actual shape of the pine tree trunk and variations in the relative position between the robot and the pine tree after the autonomous vehicle positions itself in front of the tree are presented. The technical solutions used to address these challenges are also described. The strategies used to programmatically adjust the robot toolpath based on detection of the borehole entry points and on the measurement of the insertion force are presented.

Assessment of Up-Grading Nursing Students’ Knowledge and Practice towards Short Peripheral Catheters (SPCs) Care at Al-Quds University

A short peripheral catheter is a medical device, a plastic tube inserted into a vein. A cross-sectional descriptive study was conducted to assess knowledge and practice towards short peripheral catheter care among first-year up-grading nursing students at Al-Quds University in Palestine. A convenience sample of 90 students filled questionnaires that showed they were newly- graduated with 46.1% having low experience and an inadequate knowledge level and 57.5% having a moderate practice level, with an inverse correlation between knowledge and practice. Sessions in the simulation laboratory about peripheral catheter care should be conducted to enhance quality and safety.

A study on waterproof capabilities of the bentonite-containing engineered barrier used in near surface disposal for radioactive waste

Study of nuclear fuel cycle in Vietnam at the aspect of domestic production, the exploitation and process of uranium ore were began. These processes generated large amounts of radioactive waste overtiming. The naturally occurring radioactive material and technologically enhanced radioactive material (NORM/TENORM) waste, which would be large, needs to be managed and disposed reasonably by effectivemethods. It was therefore very important to study the model of the radioactive waste repository, where bentonite waterproofing layer would be applied for the low and very low level radioactive waste in disposal site. The aim of this study was to obtain the preliminary parameters for low-level radioactive waste disposal site suitable with the conditions of Vietnam. The investigation of the ratio between soil and bentonite was interested in the safety of the uranium tailings disposal site. The experiments with some layers of waterproofing material with the ratio of soil and bentonite are 75/25; 50/50; 25/75 were carried out to test the moving of uran nuclide through these waterproofing material layers. Waterproofing layers containing bentonite combined with soil were compacted into PVC pipes. One end of the plastic tube is sealed, the other end is embedded in a solution containing uranium nuclide. Analyzing the uranium content in each layers (0,1 cm) of material pipe is to determine the uranium nuclide adsorption from solution into the material in the different ratios at the different times: 1, 2 and 3 month. The results showed that the calculated average speeds of the migration of uranium nuclide into the soil- bentonite layer are 5.4.10-10, 5.4.10-10 and 3,85.10-10 m/s and thickness waterproofing layer (for 300 years) are 4,86 m, 4,86 m and 3,63 m for layer with the ratio of soil and bentonite are 75/25; 50/50; 25/75 respectively

The full phase space dynamics of a magnetically levitated electromagnetic vibration harvester

We consider the motion of an electromagnetic vibrational energy harvester (EMVEH) as function of the initial position and velocity and show that this displays a classical chaotic dynamical behavior. The EMVEH considered consists of three coaxial cylindrical permanent magnets and two coaxial coils. The polarities of the three magnets are chosen in such a way that the central magnet floats, with its lateral motion being prevented by enclosion in a hollow plastic tube. The motion of the floating magnet, caused by e.g. environmental vibrations, induces a current in the coils allowing electrical energy to be harvested. We analyze the behavior of the system using a numerical model employing experimentally verified expressions of the force between the magnets and the damping force between the floating magnet and the coils. We map out the phase space of the motion of the system with and without gravity, and show that this displays a fractal-like behavior and that certain driving frequencies and initial conditions allow a large power to be harvested, and that more stable states than two exists. Finally, we show that at leasts fifth order polynomial approximation is necessary to approximate the magnet-magnet force and correctly predict the system behavior.

Effects of O2 Addition on the Discharge Parameters and Production of Reactive Species of a Transferred Atmospheric Pressure Plasma Jet

The therapeutic effects of atmospheric pressure plasma jets (APPJs) have been associated with the presence of reactive species, mainly the reactive oxygen and nitrogen ones, generated in this kind of plasmas. Due to that, many studies attempting to enhance the production of reactive species in APPJs have been performed. The employment of gas admixtures, usually mixing a noble gas with oxygen (O2) or water vapor, is one of the most common methods to achieve such goal. This work presents a study of how the addition of small amounts of O2 affects the electrical parameters and the production of reactive species in a transferred APPJ produced at the tip of a long and flexible plastic tube. The study was carried out employing helium (He) as the working gas and applying a high voltage (HV) in the form of amplitude-modulated sine waveform (burst mode). With this configuration it was possible to verify that the O2 addition reduces the discharge power and effective current, as a result of late ignition and shorter discharge duration. It was also found that the addition of O2 to a certain content in the gas admixture makes the light emission from oxygen atoms increase, indicating an increment in oxygen related reactive species in the plasma jet. However, at the same time the light emitted from hydroxyl (OH) and nitric oxide (NO) exhibits the opposite behavior, i.e., decrease, indicating a reduction of such species in the APPJ. For these reasons, the addition of O2 to the working gas seems to be useful for increasing the effectiveness of the plasma treatment only when the target modification effect is directly dependent on the content of atomic oxygen.

Ensuring the most effective strategy for cancer treatment of patients with brain tumors.

e14000 Background: The purpose of the study was to analyze changes in the total activity of trypsin-like proteinases (TLPs) in the blood plasma in patients with brain tumors for the preoperative differential diagnosis of benign, primary and secondary malignant brain tumors. Methods: TLPs were measured in 164 patients with brain tumors. The blood had been collected from the patients in a standard plastic tube with 3.8% sodium citrate (9:1) 3 days prior to the surgery. Citrate blood was centrifuged; citrated plasma was obtained and used to determine the total TLP activity by the unified kinetic method. Results were compared with the data in donors. Results: TLP activity in 37 (22.6%) of 164 patients was within the normal range (258–402 IU/mL, on the average 333.0±27.1 IU/mL). Benign brain tumors (meningioma) were diagnosed in all 37 patients after the tumor removal and histological analysis. In 74 (45.1%) of 164 patients, TLP activity was within 1158–1626 IU/mL (on the average 1331.0±102.4 IU/mL, p < 0.05), i.e. 3.8-5.3 times higher than the norm in donors (malignancy coefficient on average 4.4±0.3 times). Primary malignant brain tumors (glioblastoma) were diagnosed in all 74 patients after the tumor removal and histological analysis. In 53 (32.3%) of 164 patients, TLP activity was within 1794–2868 IU/mL (on the average 2227.0±174.1 IU/mL, p < 0.05), i.e. 5.9-9.4 times higher than the norm in donors (malignancy coefficient on average 7.3±0.5 times). Secondary malignant brain tumors (metastases) were diagnosed in all 53 patients after the tumor removal and histological analysis. Conclusions: The specificity of the proposed method for the differential diagnosis of brain tumors was very high: for benign tumors - 97.2%, for primary malignant tumors - 98.6% and for secondary malignant tumors - 98.1%. So, TLP activity indices in the blood plasma are an informative auxiliary laboratory test that will help in clarifying and/or confirming the differential diagnosis of brain tumors.