Abstract:Environmental factors in early life can influence child development and increase its vulnerability to neurobehavioural disorders in adulthood. The relationship between the mother and her cubs plays an important role in maintaining their physical and mental balance.\nThis work investigates the effects of maternal-offspring postnatal stress on anxious and locomotor behaviour in the first place and its effect on the lipid profile of adult male rats in the second place.\nKittens (SS) were separated from their mothers for 3 hours daily from 9h to 12h from the 3rd to the 14th postnatal day (n = 8). Another group (T) did not undergo any type of stress (n = 8) was object to this study. The behavioural study was conducted using the Openfield test at D70. At D75 a decapitation was made and the collected blood was used for the biochemical study namely: cholesterolemia and triglyceridemia. \nThe results indicate that postnatal stress of 3 hours maternal separation in adult male rats resulted in a significant decrease in locomotor behaviour, an increase in anxious behaviour, and a significant disruption of the lipid profile of the adult rats
Abstract:A famine is a widespread scarcity of food, caused by several factors including war, inflation, crop failure, population imbalance, or government policies. This phenomenon is usually accompanied or followed by regional malnutrition, starvation, epidemic, and increased mortality. Since 2010, Africa has been the most affected continent in the world. In Egypt, developing the vast desert is the key of troubleshooting the food shortage issue due to population imbalance. Darb El-Arbeain area lies between long. 29o 00/ and 31o 00/ E and lat. 22o 00/ and 24o 30/ N. The current study area is the southern part where extends 200 km to the south of the central part and has 170 km2 in area. In this study a simulation to the aquifer response under different exploitation rates is carried out using (MODFLOW 2005). Under different pumping rates, the optimum exploitation rates are when pumping out 180 %, and 280 % of initial recharge, and the drawdown in the southern parts and eastern parts of the southern area of Darb El Arbeain is less than the rest of the area so we can drill more wells.
Abstract:Recent advances in power electronics have significantly promoted the development of More Electric Aircraft. Power electronic converters for aircrafts include: DC to DC converters, DC to AC inverters, AC to DC rectifiers and AC to AC converters. In the present aircraft electrical systems, DC to DC converters are used for conversion between high-voltage DC (HVDC 270 VDC) to low voltage (28 VDC), secondary power or utilized for bi-directional power conversion between 28VDC and batteries. This work proposes a comparative analysis for some controller types used to stabilize a DC to DC Buck converter. Here are briefly presented the clasical control design strategies using state variables and also Sliding Mode control strategy. MATLAB/SIMULINK simulation schemes are implemented for a DC to DC Buck converter, using each control stategy proposed: classic control using state variables, with Sliding Mode Control and with P.I. Sliding Mode Controller. All these controllers aim to stabilize the output voltage when load varies. In order to comparative evaluate these control strategies, step load variations were applied to the Buck converter output. Closed loop functioning, both to load rise and decrease, and control strategies efficiency is studied by numerical simulation.
Abstract:Purpose:We present our experience in the diagnosis, follow-up and planning therapy of thoracic, abdominal and retroperitoneal liquid collections in different emergency patients using conventional and interventional ultrasound. \n Material and Methods: The right and left oblique and polypositionning view was used in 235 patients/159 male and 76 female/ for US examination to identify fluids in the thorax and peritoneal or retroperitoneal space. The examination was performed after the clinical survey with patients supine. Positive findings of US were compared with those provided by CT, punctures under US control or surgery. US machine supplied with linear and convex transducers, CT machine, needles and catheters were used. \n Results. 197 of all 235 US examined patients had fluid collections, confirmed by CT scan, surgery or clinival course. In 156patients we performed FN diagnostic punctures under US control. There was 155 true-positives, 25 true-negatives, 5 false-positives and 2 false-negative results. Overall this demonstrated that ultrasonography hamaunt of d a sensitivity of 98.72%, specificity of 83.33% and accuracy of 96.25 %. The PPV is 96.87% and the NPV – 92.59%.\n Conclusions. Our experience and literature reports support the opinion that US examination can and should be used as a primary method for diagnosis and follow-up of clinically suspected free and organaised fluids in the thorax, abdomen and retroperitoneum.
Abstract:Background. This study arises from an observation reflexive deep of the realities, regarding of the tendency to increase mental disorders in the local and global environment; while the service delivery and disorder mental worse. Situation that worsens in this time of contingencies, in perspective of rights for encourage human and collective welfare. Methods. Descriptive qualitative study cross-sectional on perception of 30 patients’ Colombian’s, during 2017-2018, regarding on duty service delivery and the comprehensive treatment received. The interviews went analyzed with Atlas. Ti 5.0. from the perspective of the perception of patients. Findings. Patients’ experience indicates that in the attention: 1) Lack of timely and effective service to the psychiatric patient. 2) The referral of patients to the specialist doctor was insufficient and untimely. 3) Some services do not consider factors of vulnerability to the patient\'s neuropsychiatric disorder. 4) The service is limited. Conclusions. The doctors involved in these services should re-signify the patient’s psych affective life, so better cognitive treatments could be found to train the individual´s brain as producer of endogenous substances, strengthening the harmonize between mind, emotions and organism. For contribute to improve the integral well-being toward achieve of economic, psycho-affective and sociocultural individual stability of the patient. \nThis study arises from an observation reflexive deep of the realities, regarding of the tendency to increase mental disorders in the local and global environment; while the service delivery and disorder mental worse. Situation that worsens in this time of contingencies, in perspective of rights, social responsibility, that encourage human and collective welfare. Methods. Descriptive qualitative cross-sectional study on perception of 30 patients’ Colombian’s, during 2017-2018, regarding the duty of a service delivery over the comprehensive treatment received. The interviews went analyzed with Atlas. Ti 5.0. from the perspective of the perception of patients. Findings. Patients’ experience indicates that in the attention: 1) Lack of timely and effective service to the psychiatric patient. 2) The referral of patients to the specialist doctor was insufficient and untimely. 3) Some cases, the service does not consider factors of vulnerability to patient\'s neuropsychiatric disorder. 4) The service is limited. Conclusions. The conclusions mains: the doctors involved in these services should re-signify the patient’s psych affective life, so better cognitive treatments could be found to train the individual´s brain as producer of endogenous substances strengthening the harmonize between mind, emotions and organism. This will contribute to improve the patient`s individual and social well-being.
Abstract:The pneumatic tourniquet is widely used in orthopedic surgery; however, it may causea series of complications. Some investigators have used ultrasound-guided methods tofind lower tourniquet pressures that permit the operation to proceed while mitigatingcomplications. Studies have shown that a tourniquet can damage patients� pulmonaryventilation function. It remains unclear, however, whether setting the pressure of thetourniquet under the guidance of ultrasound can reduce injury to pulmonaryventilation function in patients undergoing lower limb surgery. A total of 100 patientswho required tourniquet for lower limb surgery were divided into two groups (n = 50each): control and ultrasound-guided. In the ultrasound-guidance group, the optimaltourniquet pressure was the pressure at which popliteal artery blood flow disappearedon imaging. Pneumatic tourniquet pressure was set using traditional methods in thecontrol group. At specified time points (immediately after tourniquet inflation [T0], 1h after tourniquet inflation [T1], and 0.5 h [T2], 2 h [T3], 6 h [T4] and 24 h [T5] aftertourniquet deflation), several parameters were measured, including mean arterialpressure (MAP), heart rate (HR), plasma malondialdehyde (MDA) and superoxidedismutase (SOD) concentration, partial pressure of arterial blood oxygen (PaO2),partial pressure of arterial CO2 (PaCO2), and calculated respiratory index (RI),alveolar artery blood oxygen partial pressure difference (PA�aDO2) and arterialblood/alveolar oxygen partial pressure ratio (A/a ratio). In both groups, MAP waslower, and HR was more rapid at T2 than at T0. Compared with T0, PaO2 and the a/Aratio decreased, and PA-aDO2 and RI ratio increased at T4 in both groups. Comparedwith T0, the concentration of MDA was higher and the concentration of SOD waslower at T3�T5 in the control group. In the ultrasound-guided group, theconcentration of MDA was higher and the concentration of SOD was lower at T3�T5than at T0. Compared with the control group, in the ultrasound-guided group MAPincreased and HR decreased at T2?the ratio of PaO2 and a/A increased, while the ratioof PA-aDO2 and RI decreased at T4 and the concentration of MDA decreasedsignificantly, the concentration of SOD increased significantly at T3�T5. Therefore,patients in whom tourniquet pressure was set using ultrasound exhibited more stableMAP and HR, and less dysfunction in pulmonary ventilation compared with thetraditional method of pressure setting. A possible mechanism is that this methodreduces the consumption of the oxygen free radical scavenging agent (SOD), thusreducing lipid peroxide reactions (MDA) and reduces lipid peroxide injury in theprocess of limb ischemia-reperfusion injury caused by the tourniquet.
Abstract:Background: One of the most relevant complications of diabetes mellitus is the diabetic neuropathy (DN), which might be related to alterations of the postural stability. \nObjective: The objectives of this study were to evaluate the DN relation with alterations in the postural control, to describe and to analyze the methods of measurement of postural control.\nMethods: a systematic review of the literature including case control studies related to postural control and DN was carried out on the electronic data bases Pub Med, Scopus, Web of Science, EMBASE, Central Cochrane, Cinahl and Lilacs, using the descriptors: diabetic neuropathy, balance alterations, postural stability and their synonyms. The data analyzed included: clinical characteristics, methods and results of balance evaluations. The quality of the studies was evaluated using the instrument STROBE.\nFindings: The total number of studies found was 5,686. From these, 22 were selected for analysis, totaling 1,175 participants, and within that group 421 presented DN. Most studies showed that the postural oscillation in those participants was over 30% in relation to the control group, regardless of the method used to measure stability. When comparing methods, the most practical method used to measure postural stability was the Berg Balance Scale (BBS).\nInterpretation: Association between DN and postural stability alteration was found. Due to the inexistence of a standard to evaluate and measure this alteration, factors such as applicability and cost-benefit relation should be considered when choosing the most suitable measurement method. PROSPERO (CRD42020163466).
Abstract:In this paper, which is metaphilosophical and not historiographic, it is about finding in Georges Canguilhem\'s work valid elements to elaborate a critique of transhumanist ideology. The originality of Canguilhem\'s proposal resides first of all in placing himself outside the field of bioethics, opting instead for a biological philosophy or a philosophy of medicine. Secondly, it maintains a \"technophilic\" position, which roots technique in the normative movement of life. Finally, Canguilhem defends a non-essentialist conception of life, understood as contingent variation and as an evaluative activity.
Abstract:Let $(\\Gamma,\\star)$ be a finite abelian group and $S=\\{x\\in \\Gamma \\ | \\ x\\neq x^{-1} \\}$. The {\\it inverse graph} of $\\Gamma$ denoted by $G_s(\\Gamma)$ is the graph whose vertex set is the elements of $\\Gamma$ and two distinct vertices $x$ and $y$ of $\\Gamma$ are adjacent if and only if $x\\star y\\in S$. In this paper, we characterize all finite abelian groups whose inverse graphs are bipartite, complete bipartite and star graph. Further we determine (up to isomorphism) all finite abelian groups whose inverse graphs have genus at most one. We also classify the finite abelian groups for which the inverse graph $G_s(\\Gamma)$ is outerplanar.
Abstract:The peer-to-peer vacation rental platform is a type of accommodation reservation management system. Through this platform, anyone can be a host by offering non-hotel vacation accommodation to others or becomes a guest by booking accommodation via this platform. Distribution of keys between the hosts and the guests has become an issue. Apart from paying the cost of key fabrication and replication, the hosts need a careful planning in the distribution of keys. Also, the distribution of keys would lead to security concerns in case of misplacing of keys or lost keys. Although various techniques have been developed for digital door locks or smart locks, none of the techniques is integrated with the peer-to-peer vacation rental platform to overcome the key distribution problem. In this paper, we propose a vacation rental management platform with smart lock access to overcome the key distribution problem. We have built a prototype system and the testing resuls are promising. The integration can help to mitigate the hassles of passing the keys from the host to the guest and vice versa. It is posited that such integration can improve user experience using the peer-to-peer vacation rental platforms and increase the market valuation of these platforms.