bluuebunny/crossref_metadata_2025 huggingface dataset:
MICROFLORA OF SURGICAL WOUNDS AND FISTULAS IN PATIENTS WITH CHRONIC OSTEOMYELITIS OF THE TIBIA BEFORE RECONSTRUCTIVE TREATMENT, IN CASE OF RECURRENCE OF INFECTION
Authors: Burnashov S. I. , Shipitsyna I. V. , Osipova E. V.
Published: February 2020

Relevance of microbiological monitoring in chronic osteomyelitis of the tibia developed during treatment of fractures with a plate is associated with a noticeable increase of various kinds of the microflora. A microbiological study was conducted of pathological material taken from wounds, fistulas and from the focus of inflammation in 49 patients with chronic tibial osteomyelitis, developed during treatment of fractures with a plate. The patients underwent sequestrectomy of the tibia and subsequent application of bilocal consecutive compression-distraction osteosynthesis or monolocal compression osteosynthesis. Microbiological study of smears taken before the reconstructive treatment from fistulas and wounds of patients showed that in mono-culture there were 30 strains, the remaining 30 - as a part of 14 two - and three-component associations. The frequency of S. aureus strains was 55.3%, followed by coagulase-negative staphylococcus - 13.6% and representatives of the family Enterobacteriacae - 10.2%. There were methicillin-resistant strains of S. aureus in 11.8%, strains of coagulase-negative staphylococcus (MRCoNS) - 6.8%. Recurrence of the disease was observed in 7 patients. The microflora of the discharge from the fistula was represented by monocultures of S. aureus and associations of bacteria in which one of the components was methicillin-resistant strains of S. aureus. We observed differences in the contents of the microflora before reconstructive treatment of patients and in recurrence of infection. In case of recurrence of infection, the qualitative contents of the microflora changed: in 2 patients in the association of microorganisms and in 3 - in monocultures, S. aureus strains acquired resistance to ß-lactam antibiotics, new associations appeared, which were not present in primary cultures before reconstructive treatment. The study showed that the spectrum of micro-organisms in chronic osteomyelitis of the tibia, developed after osteosynthesis with a plate, varied and is subject to change and that dictates the need for microbiological monitoring to detect the etiological structure of pathogens, monitoring of antibiotic resistance of the isolated strains and rational approach to treatment of patients.
Nonpharmacologic Approaches to Pain, Engorgement, and Plugging in Lactation: Applying Physical Therapy Techniques From Breast Cancer Care to Breastfeeding Patients
Authors: Mogensen Nicole , Portman Ada , Mitchell Katrina
Published: February 2020

Introduction

Breast and nipple pain is one of the most common reasons why mothers stop breastfeeding earlier than recommended. Once conditions such as subacute mastitis, oversupply, and dermatitis have been treated or ruled out, functional breast pain may persist.

Review

We describe validated physical therapy techniques that may reduce chronic pain in breastfeeding. These techniques include lymphatic massage, reverse-pressure softening, kinesiology taping, neural mobilization, cupping, and therapeutic ultrasound.

Conclusion

While more commonly used in the breast cancer population after radiation and surgery, we propose these techniques may also prove efficacious in breastfeeding patients as well.
El proceso de autoevaluación institucional: el resultado de una dinámica cultural
Authors: Molano Camargo Milton , Fontalvo Aragón Karen
Published: February 2020

El propósito de este artículo es recopilar de modo sistemático lo que ha significado para la Universidad de La Salle el ejercicio de autoevaluación institucional, con miras a la segunda renovación de su acreditación, en el marco de un largo proceso para consolidar la autorregulación como una dinámica inherente a su cultura. El trabajo aporta a una de las líneas editoriales de la Revista de la Universidad de La Salle, que busca preservar la memoria histórica de la organización; además, contribuye a la reflexión sobre los sistemas de aseguramiento de la calidad en la educación superior
El laboratorio bacteriológico y la investigación de las enfermedades a comienzos del siglo XX. Apuntes de una vida: Federico Lleras Acosta
Authors: Villamil Jiménez Luis Carlos
Published: February 2020

Durante el siglo XIX, la lucha contra las enfermedades constituyó un interesante reto, asumido mediante el empleo de rutinas tradicionales, dado el escaso conocimiento de los adelantos europeos en el campo de la infectología. Con la llegada del doctor Claude Véricel, veterinario francés, se estableció la Escuela de Veterinaria, donde los métodos pasterianos fueron rutinarios para los estudiantes.
Federico Lleras Acosta, un joven bachiller que se sintió atraído por la nueva escuela, se convirtió en un excelente estudiante y en el discípulo predilecto de Véricel. Una vez graduado, inició la investigación bacteriológica.
Sus trabajos sobre la calidad de las aguas, la carne y la leche de consumo en Bogotá, la malaria bovina, la producción de vacunas contra el carbón sintomático, el control biológico de la plaga de langostas, la terapia para el control de la enteritis infantil y las infecciones puerperales, así como sus estudios sobre la lepra, conformaron un hito para la salud animal y pública colombiana. La síntesis de su vida, logros y realizaciones es un ejemplo de trabajo interdisciplinar para quienes se preparan como profesionales con el enfoque “Una salud”
Investigation of Noise Induced Hearing Loss at Shipyard Company, Surabaya
Authors: Sincihu Yudhiakuari , Steven Steven , Dinata Mulya , Taurusia Melani
Published: February 2020

Introduction: Noise is a health risk that cannot be avoided in production process. Noise has the potential to cause hearing loss for workers. The bad news, noise damage due to noise is permanent. Audiometric screening at shipyard company employees found 81.2% experienced Sensory-Neural Hearing Loss. 61.5% of employees experience deafness in both ears. The research objective was to find the cause of deafness at shipyard company. Methods: A Quantitative research with cross sectional approach in 64 subjects who worked in the ship repair production unit. The sample is chosen with a simple random technique according to inclusion and exclusion criteria. Assessment was carried out using questionnaires, measurement, and direct observations. Result: The bad habit of wearing ear protectors on employees as a cause of deafness (p<.001, Coef .517**). Sound level measurement shows the activity of chipping, welding, cutting and outfitting with noise intensity more than the recommended threshold (85 dBA for 8 hour per day). Noisy sources were found such as blowers, compressors, grinders, cutting mach ines, ringlet machines, hammer blows on plates and generators. Conclusion: Hearing loss in shipyard company employees is a work-related disease caused by the poor culture of wearing ear protectors. The habits does not wear earplug/earmuff tools because its not comfortable in the ear when the appliance is used, the tools too small so its easily lost, forgetten to carry, and tool are not available.
Effectiveness of Applied Behavior Analysis (ABA) with regard to tooth brushing in autistic children
Authors: Melati Felicia , Indriyanti Ratna , Setiawan Arlette Suzy
Published: February 2020

Background: Children demonstrating autistic spectrum disorders tend to be uncooperative when receiving dental treatment. Actions as simple as brushing the teeth with a prophylactic brush can constitute complex processes for children with such conditions. Applied behavior analysis (ABA) can train children in new positive behavior and it is, therefore, anticipated that an ABA-based approach iscapable of influencing the behavior of individuals with autistic spectrum disorder. Purpose: This study aimed to assess the effectiveness of the ABA-based approach for autistic children during dental brushing procedures. Methods: The research constituted a quasiexperimental single subject investigation of children presenting autistic spectrum disorders who attended the Lembaga Pendidikan Autisma Prananda, Bandung. Potential changes in the behavior of subjects were monitored four times during treatment with a one-week interval between consultations. Those subjects satisfying the inclusion criteria consisted of 11 boys and 4 girls. The data analysis used in this study consisted of an ANOVA test and a non-parametric Kruskal-Wallis test with a p–value < 0.005. Results: Changes in scores between the initial and final consultations were statistically significant with a p-value (0.269) <0.05. Statistically significant differences existed between changes in the behavior of level 1 and level 2 autistic subjects. Conclusion: An ABA-based approach effectively changes the behavior of autistic children with regard to prophylactic brushing. Children with level 1 autistic spectrum disorder demonstrate greater capacity to follow instructions and consistently implement a prophylactic brushing technique.
Contrasting efficacy of cocoa POD HUSK extract and 8% propolis extract in maintaining of root canal wall cleanliness
Authors: Yuanita Tamara , Andari Uli Sasi , Rukmo Mandojo , Sukaton S. , Dinari Deavita
Published: February 2020

Background: The existence of the smear layer, which can be produced during root canal instrumentation, may compromise the bond between filling material and the root canal walls. Therefore, the use of an effective root canal irrigation solution, a commonly employed form of which is sodium hypochloride (NaOCl), is important. Sodium hypochloride has several positive properties including effectiveness as a disinfectant agent and its ability to promote tissue-dissolution, although it is ineffective at cleaning the smear layer. There have been numerous recent studies of the application of phytomedicines in endodontics due to their advantages such as minimum toxicity and cost effectiveness. The saponin contained in both the propolis and cocoa pod husk acts as a surfactant that may lower surface tension and dissolve debris containing organic and anorganic materials. Purpose: The study aimed to provide evidence of the differences between root canal wall cleanliness when treated with 8% propolis extract and different concentrations of cocoa pod husk extract. Methods: 25 extracted teeth with single straight root canals were randomly divided into five categories (n=5). Sample preparation was performed using a rotary file and irrigated with different solutions. The first group was administered 2.5% NaOCl, the second group 8% propolis, the third group 3.12% cocoa pod husk extract, the fourth group 6.25% cocoa pod husk extract, and the fifth group 12.50% cocoa pod husk extract. The samples were then dissected into two sections at the apical third and their cleanliness scores subjected to a Mann-Whitney test with a significance level of p=0.05. Results: A significant difference was identified between all groups (p<0.05) and on the median control test, the highest value of 1.6 was recorded by the 6.25% cocoa pod husk extract, compared to the other four groups Conclusion: Cocoa pod husk extract demonstrates greater efficacy at cleaning root canal walls compared to 8% propolis extract.
A gender-based comparison of intermolar width conducted at Padjajaran University Dental Hospital, Bandung, Indonesia
Authors: Azlan Adriana , Mardiati Endah , Evangelina Ida Ayu
Published: February 2020

Background: Evaluation of dental arches is important for both diagnosis and treatment in the fields of orthodontics, prosthodontics, and forensics. The perimeter or circumference affects the gender-specific dimensions of the dental arch. Purpose: To identify the inter-gender difference between maxillary and mandibular intermolar width of the first molars in Indonesia. Methods: This retrospective and comparative analytical study involved a gender-based comparison of maxillary and mandibular intermolar width in the first molars. A purposive sampling technique was employed for data selection. Ninety dental cast models were selected according to the inclusion criteria of non-growing patients and perfect dental conditions, with any damaged dental models being rejected. After selection, the dental cast was marked at the maxillary and mandibular first molar central fossae before being measured three times with a digital vernier caliper. The data obtained was subsequently analyzed by means of a Kolmogorov-Smirnov test, an F-test-Snedecor (with p>0.05) and Independent Sample t-test (with p<0.05). Results: The average maxilla intermolar widths for males and females were 49.36mm and 46.75mm respectively, while the average mandibular intermolar widths for males and females were 43.17mm and 40.5mm. An independent sample t-test showed that the maxilla and mandibular intermolar widths were significantly different for males and females (p=0.000, p<0.05), with male subjects possessing a higher value than female subjects. Conclusion: A significant gender-based difference existed between the maxillary and mandibular intermolar width of patients attending Padjadjaran University Dental Hospital, Bandung, Indonesia.
Analysis of the relationship between human cytomegalovirus DNA and gB-1 genotype in the saliva of HIV/AIDS patients with xerostomia and salivary flow rate
Authors: Sufiawati Irna , Suniti S. , Nelonda Revi , Wisaksana Rudi , Rendati Agnes Rengga , Amalia Riezki , Tampubolon Isabellina Dwades
Published: February 2020

Background: Human immunodeficiency virus (HIV) infection increases vulnerability to opportunistic viral infection, including Human cytomegalovirus (HCMV) infection, that has been detected in saliva. The HCMV envelope glycoprotein B (gB) is highly immunogenic and has been associated with HCMV-related diseases. Purpose: The purpose of this study is to assess the prevalence of HCMV and gB-1 genotype in the saliva of HIV/AIDS patients and to analyse their relationship with xerostomia and salivary flow rate (SFR). Methods: This cross-sectional study involved 34 HIV/AIDS patients. Saliva was tested for the presence of HCMV DNA using PCR microarrays, and nested PCR for gB-1 genotype detection. Xerostomia was measured using a Fox’s questionnaire. Unstimulated whole saliva flow rate was measured by means of the spitting method. Results: The composition of the research population consisting of 73.5% males and 26.5% females with HIV/AIDS. HCMV was found in 64.7% of HIV/AIDS patients, while gB-1 genotype was detected in 59.1%. Xerostomia was closely associated with the presence of HCMV in saliva (p<0.05), but not with gB-1. There was no significant relationship between xerostomia and SFR rates in the research subjects with HCMV positive saliva (p> 0.05). Conclusion: The presence of xerostomia-associated HCMV in saliva was elevated among HIV/AIDS patients. Further investigation is required to identify other gB genotypes that may be responsible for xerostomia and SFR changes in HIV/AIDS patients.
Penggunaan ROC pada Skrining Pre-Eklampsia dengan Metode USG DVAUT pada Ibu Hamil di Puskesmas Mulyorejo Surabaya
Authors: Laraswati Intan , Indriani Diah
Published: February 2020

Pre-eclampsia is the third highest cause of death in pregnant women. Symptoms of pre-eclampsia can be identified by the presence of hypertension, proteinuria and edema during pregnancy until postpartum. Pre-eclampsia cannot be identified with certain risk factors, and cannot be prevented. Pre-eclampsia can be detected early using the pre-eclampsia screening method with sonography. The sonographic device used is referred to as DVAUt ultrasound (Uterine Artery Doppler Velocimetry Ultrasonography). This studying an analytic observational research with a cross sectional study design. The population was all pregnant women who examined at the Mulyorejo primary health center in 2013 until the first quarter of 2018. The sampling technique was consecutive sampling with inclusion and exclusion criteria. The number of samples obtained is 496 data. The study aimed to determine the sensitivity and specificity of the pre-eclampsia screening method using DVAUt ultrasound in detecting the tendency of pregnant women to experience pre-eclampsia. The data were analyzed of sensitivity and specificity and the Receiver Operating Characteristics (ROC) curve with p <0.001. P1GF / sFlt-1 (Gold standard) biomaker test sensitivity of 89% and specificity of 90%. The results of this study were the sensitivity of pre-eclampsia screening at 99.7% and specificity of 81.9%. The ROC method obtained the results of pre-eclampsia screening using DVAUt ultrasound has a high sensitivity and specificity in detecting the tendency of pregnant women to experience pre-eclampsia. Suggestions for research to refresh knowledge and procedures for conducting pre-eclampsia screening checks.
Pengendalian Dorongan Seksual melalui Peningkatan Peran Orang Tua dan Aktivitas Santriwati
Authors: Dania Samara Rahma , Salim Lutfi Agus
Published: February 2020

One of adolescence’s problems is uncontrolable sexual drive. It was expected that the students of Islamic boarding school have a sexual driving better than students of common school. But, sexuality problem among boarding school’s student is similar with student in common school. Good sexual driving can protect the students from negative impacts of sexual activity. Sexual driving is influenced by parent’s role and student activity. This study aimed to analyse the relationship between parent’s role and student activity with sexual driving of female student in islamic boarding school in Sukoharjo City. The research was taken on April, 2019. The subjects were 107 students in the age of 10–18 who study at Madrasah Aliyah (MA) Pondok Pesantren X andY, Kabupaten Sukoharjo. Research method is cross-sectional. Sampling technique was stratified random sampling, whereas data collection technique is interview using questionnaire. The data were a analyzed with chi-square (p value < 0,005). The result showed that parent’s role has significant relationship with sexual driving (p value < 0,005), whereas activity do not have relationship with sexual driving (p value > 0,05). Parent’s role was giving direction to their children to have good behavior. Student who has good faith will avoid something that prohibited in Islam. Although student of Islamic Boarding School has leisure time, regulation of Islamic boarding school makes them are avoided from negative sexual activity.
Interrelation of the dynamics of serum concentrations of interleukin-1β, interleukin-6 and interleukin-10 with clinical data in acute ischemic stroke and the strategy of reperfusion therapy
Authors: Bykova A. Yu. , Kulesh A. A. , Kayleva N. A. , Kuklina E. M. , Shestakov V. V.
Published: February 2020

Aim. To study the relationship between the dynamics of serum concentrations of interleukin-1β, interleukin-6 and interleukin-10 with clinical data in the acute period of ischemic stroke, and the strategy of reperfusion therapy.

Materials and methods. In 28 patients with acute ischemic stroke, half of whom underwent intravenous thrombolysis, the concentration of interleukin-1β, interleukin-6 and interleukin-10 was assessed at admission, on the 3rd and 10th day of the disease.

Results. The concentration of interleukin-1β and interleukin-6 decreases during the acute period of stroke. The concentration of interleukin-10 remains unchanged for the first 10 days since the development of stroke. When thrombolysis is performed, there is a more significant decrease in interleukin-1β concentration in the hyperacute period of stroke, whereas in patients without reperfusion there is a decrease in interleukin-6 concentration from 1 to 10 days. The concentration of cytokines is associated with age, lipid spectrum, severity of carotid atherosclerosis, myocardial hypertrophy and injection fraction of the heart. Only in the subgroup of thrombolysis, correlations of cytokine concentrations with systolic blood pressure at admission, hemoglobin concentration, total cholesterol and high-density lipoproteins, hematocrit, degree of stenosis of the contralateral carotid artery, injection fraction and the number of antihypertensive drugs prescribed in the hospital were recorded. The concentration of interleukin-6 at day 10 is associated with the severity of stroke at admission, and the level of IL-10 on day 3 of the disease, with the mobility of patients at discharge.

Conclusions. In the hyperacute period of stroke, there is a decrease in the pro-inflammatory activity of blood serum, more pronounced in patients undergoing systemic thrombolysis. Concentrations of interleukin1β, interleukin-6 and interleukin-10 are associated with a wide range of parameters characterizing the cardiovascular and functional status, and the pattern of these associations differs depending on the reperfusion therapy strategy.
Is there constitutional and morphological predisposition to akathisia in schizophrenic patients receiving antipsychotic therapy?
Authors: Goncharova A. A. , Kornetova E. G. , Kornetov A. N. , Semke A. V.
Published: February 2020

Objective:to identify constitutional and morphological predisposition to akathisia in schizophrenic patients receiving antipsychotic therapy.

Materials and methods. 250 patients with schizophrenia receiving basic antipsychotic therapy were studied, aged 40 [32; 50] years old; disease duration was 13 [7; 22] years. The age when the schizophrenic process manifested itself was 23 [19; 30] years. Clinical evaluation of akathisia was performed using the Barnes Akathisia Scale (BARS, BAS), so akathisia was detected in 92 (36.8%) patients. All persons included in the study underwent an anthropometric survey according to the Bunak’s method. Statistical analysis was performed using Statistica for Windows software (V. 12.0), the odds ratio was estimated using the MedCalc® online calculator.

Results. The comparative analysis of the Rees – Eysenk body index and Tanner stages in groups of schizophrenic patients receiving antipsychotic therapy with and without akathisia showed no significant differences between them (p = 0.317 and p = 0.347, respectively). Comparison of groups in the distribution of constitutional and morphological types also revealed no statistical differences (p = 0.189). Patients with the andromorphic type of somatic sexual differentiation increased the risk of antipsychotic-induced akathisia (OR = 1.73; 95% CI: 1.02–2.94; p = 0.039) almost twofold.

Conclusion. Attribution of patients to different constitutional and morphological types does not play a role in the development of antipsychotic-induced akathisia, unlike attribution to andromorphic somatic sexual differentiation types, which significantly increases its risk.
Cocaine and depressive disorders: When standard clinical diagnosis is insufficient
Authors: Alías-Ferri Maria , García-Marchena Nuria , Mestre-Pintó Joan Ignasi , Araos Pedro , Vergara-Moragues Esperanza , Fonseca Francina , González-Saiz Francisco , Rodríguez de Fonseca Fernando , Torrens Marta , Group NEURODEP
Published: February 2020

Background: Cocaine use is a growing global health problem and patients with cocaine use disorders (CUD) present several complications, including high rates of major depression. These subjects present two types of major depressive disorder (MDD): primary major depressive disorder (P-MDD) and cocaine-induced major depressive disorder (CI-MDD). To improve treatment, it is necessary to distinguish between both types. The aim of this study was to assess the differences in depressive symptomatology criteria (P-MDD vs CI-MDD) in CUD patients. Methods: Secondary data analysis was carried out with a cross-sectional sample of 160 patients presenting CUD and MDD. Clinical assessment was performed using the Psychiatric Research Interview for Substance and Mental Disorders (PRISM). A differential diagnosis was obtained between P-MDD and CI-MDD. Results: Men represented 80% of the sample, the mean age was 38.61 years, and 64.5% had elementary studies. CI-MDD diagnosis (61.3%) was more frequent than P-MDD (38.7%). There was a younger age of CUD onset in CI-MDD patients. In addition, 79.4% of the patients had another substance use disorder diagnosis. The criterion “Changes in weight or appetite” was more prevalent (57.1%) in P-MDD group. Conclusions: We found differences in the criterion “Changes in weight or appetite”. Further research is needed in this field to establish a differential diagnosis and thus provide better treatment for CUD patients.
Consumo de fármacos opiáceos en la ciudad de Madrid: Factores sanitarios y sociodemográficos asociados
Authors: Pedrero-Pérez Eduardo J. , Morales-Alonso Sara , Álvarez-Crespo Blanca , Benítez-Robredo María Teresa
Published: February 2020

El consumo de analgésicos opiáceos ha provocado una situación de emergencia sanitaria y social en Estados Unidos. En España, según datos oficiales, la prescripción de estos fármacos ha experimentado un espectacular ascenso en la última década. Este estudio explora la prevalencia del uso de estos fármacos y las características sanitarias y sociodemográficas de sus consumidores en la ciudad de Madrid. Se realizó una encuesta telefónica aplicando un muestreo estratificado y aleatorizado, en la que se preguntó por el uso de estos fármacos y si fueron médicamente prescritos o no. La muestra estuvo compuesta por n= 8.845 sujetos de edades entre 15 y 98 años. Un 16,0% declara haber usado estos fármacos en el último año y un 9,1 los toma en las dos últimas semanas. El consumo es más frecuente en mujeres, clase social baja y menor nivel de estudios. El grupo más joven (15-29 años) ya lo usa en el 12,5%. Quienes usan opioides refieren peor salud percibida, menor calidad de vida, más problemas de salud mental, más soledad no deseada, más uso de otros psicofármacos, más frecuente uso diario de tabaco y menos consumo problemático de alcohol. Un 10% de quienes los usan lo hacen sin prescripción médica. Combinando estos datos con los de prescripción ofrecidos por el Ministerio de Sanidad, resulta necesario prestar atención a un problema que puede hacerse patente en los próximos años, aconsejando la adopción de medidas urgentes para atajarlo antes de que aproxime la situación española a la ya bien conocida en otros países.
Prevención del tabaquismo con mensajes narrativos. Estudio experimental sobre el efecto conjunto de la similitud con el protagonista y la voz narrativa
Authors: Igartua Juan-José , Rodríguez-Contreras Laura , Marcos-Ramos María , González-de-Garay Beatriz , Frutos Francisco Javier
Published: February 2020

El presente trabajo se centra en la prevención del tabaquismo utilizando mensajes narrativos. En particular, se analiza el papel de dos características de los mensajes narrativos que pueden influir, de manera indirecta, en la intención de dejar de fumar, las expectativas de auto-eficacia y la percepción de la eficacia de la respuesta preventiva. Para ello, se llevó a cabo una investigación experimental (N = 680, 50% mujeres y rango de edad 18-55 años) con un diseño factorial 2 (voz narrativa: mensaje en primera vs. tercera persona) x 2 (similitud con el protagonista: baja vs. alta). Los resultados mostraron que la condición óptima de recepción (narración en primera persona protagonizada por un personaje similar a la audiencia) indujo niveles más elevados de identificación con el protagonista (un exfumador describía el proceso de abandono del tabaco y las mejoras que ha experimentado desde entonces). Los análisis mediacionales mostraron que la condición óptima de recepción ejercía efectos indirectos significativos sobre las variables dependientes que se debían al aumento de la identificación y la reducción de la reactancia. Además, la condición óptima de recepción también ejerció un efecto indirecto significativo sobre la eficacia percibida de la respuesta preventiva que se explicaba por el incremento de la identificación y la reducción de la contra-argumentación. El presente trabajo abre una línea de estudio sobre la construcción de mensajes narrativos para la prevención del tabaquismo. Se pone de manifiesto la relevancia de las características que dichos mensajes deben tener para que se activen procesos mediadores que faciliten la persuasión.
C4 Space-Time.. A Window to New Physics?
Authors: Mastoridis Dimitris , Kalogirou Konstantinos
Published: February 2020

We explore the possibility to form a physical theory in $C^4$. We argue that the expansion of our usual 4-d real space-time to a 4-d complex space-time, can serve us to describe geometrically electromagnetism and nuclear fields and unify it with gravity, in a different way that Kaluza-Klein theories do. Specifically, the electromagnetic field $A_\mu$, is included in the free geodesic equation of $C^4$. By embedding our usual 4-d real space-time in the symplectic 8-d real space-time (symplectic $R^8$ is algebraically isomorphic to $C^4$), we derive the usual geodesic equation of a charged particle in gravitational field, plus new information which is interpreted. Afterwards, we formulate and explore the extended special relativity and extended general relativity an $C^4$ or$R^8$. After embedding our usual 4-d space-time in $R^8$, two new phenomena rise naturally, that are interpreted as "dark matter" and "dark energy". A new cosmological model is presented, while the geometrical terms associated with "dark matter" and "dark energy" are investigated. Similarities, patterns and differences between "dark matter", "dark energy", ordinary matter and radiation are presented, where "dark energy" is a dynamic entity and "dark matter" reveal itself as a "mediator" betwen ordinary matter and "dark energy". Moreover, "dark matter" is deeply connected with "dark energy". Furthermore, the extended Hamilton-Jacobi equation of the extended space-time, is transformed naturally as an extended Klein-Gordon equation, in order to get in contact with quantum theories. By solving the Klein-Gordon equation analytically, we derive an eigenvalue for Higg's boson mass value at 125,173945 $Gev/c^{2}$. The extended Klein-Gordon equation, also connects Higg's boson (or vacuum) with Cosmology, due to the existence of our second "time" T (cosmological time), which serve us to connect quantum theories with Cosmology. Afterwards, in the general case, we explore the symmetries of the curved Hamilton-Jacobi equation locally, in order to investigate the consequences of a $C^4$ space-time in Standard Model. An extension to Standard Model is revealed, especially in the sector of strong nuclear field. The Stiefel manifold $SU(4)/SU(2)$ seems capable not only to describe the strong nuclear field but give us,as well, enough room to explore in the future, the possibility to explain quark confinment. Our extension, flavors firstly the unification of nuclear fields and afterwards the unification of nuclear fields with electromagnetic field. The desired grand unification, is achieved locally, through the symmetry group $GL(4,C)\simeq SO(4,4)\cap U(4)$ and we present a potential mechanism to reduce the existing particle numbers to just six. Afterwards,23 present the extended Dirac equation in $C^4$ space-time (Majorana-Weyl representation) plus a preliminary attempt to introduce a pure geometric structure for fermions. Finally, we consider a new geometric structure through n-linear forms in order to give geometric explanation for quantisation
On the Directivity of Lamb Waves Generated by Wedge PZT Actuator in Thin CFRP Panel
Authors: Shevtsov Sergey , Chebanenko Valery , Shevtsova Maria , Chang Shun-Hsyung , Kirillova Evgenia , Rozhkov Evgeny
Published: February 2020

This paper addresses investigation of guided-wave excitation by angle-beam wedge piezoelectric transducers in multi-layered composite plate structure with orthotropic symmetry of the material. The aim of the present study is to determine the capability of such actuators to provide the controlled generation of an acoustic wave of a desirable type with the necessary wavelength, propagation distance and directivity. The studied CFRP panel is considered as homogenous with effective elastic moduli and anisotropic structural damping, whose parameters were determined experimentally. According to the results of dispersion analysis and taking into account the data of wave attenuation in a highly damping CFRP composite, the two types of propagating waves A0 and S0 were considered theoretically and experimentally in the frequency range 10 - 100 kHz. Using the results of a previous study, the structure of the wedge actuator was reconstructed to develop its finite element (FE) model, and a modal analysis was carried out, which revealed the most intense natural vibration modes and their eigenfrequencies within the used frequency range. Both experimental and numerical studies of the generation, propagation, directivity and attenuation of waves in the orthotropic composite panel under study revealed the influence of the angular orientation of the actuator on the formation of wave patterns and allowed to determine the capabilities of the wave's directivity control.
A Partial Information Decomposition Based on Causal Tensors
Authors: Sigtermans David
Published: February 2020

We propose a partial information decomposition based on the newly introduced framework of causal tensors, i.e., multilinear stochastic maps that transform source data into destination data. The innovation that causal tensors introduce is that the framework allows for an exact expression of an indirect association in terms of the constituting, direct associations. This is not possible when expressing associations only in measures like mutual information or transfer entropy. Instead of a priori expressing associations in terms of mutual information or transfer entropy, the a posteriori expression of associations in these terms results in an intuitive definition of a nonnegative and left monotonic redundancy. The proposed redundancy satisfies the three axioms introduced by William and Beer. The symmetry and self-redundancy axioms follow directly from our definition. The data processing inequality ensures that the monotonicity axiom is satisfied. Because causal tensors can be used to describe both mutual information as transfer entropy, the partial information decomposition applies to both measures. Results show that the decomposition closely resembles the decomposition of other another approach that expresses associations in terms of mutual information a posteriori.
A Partial Information Decomposition Based on Causal Tensors
Authors: Sigtermans David
Published: February 2020

We propose a partial information decomposition based on the newly introduced framework of causal tensors, i.e., multilinear stochastic maps that transform source data into destination data. The innovation that causal tensors introduce is that the framework allows for an exact expression of an indirect association in terms of the constituting, direct associations. This is not possible when expressing associations only in measures like mutual information or transfer entropy. Instead of a priori expressing associations in terms of mutual information or transfer entropy, the a posteriori expression of associations in these terms results in an intuitive definition of a nonnegative and left monotonic redundancy, which also meets the identity property. Our proposed redundancy satisfies the three axioms introduced by Williams and Beer. Symmetry and self-redundancy axioms follow directly from our definition. The data processing inequality ensures that the monotonicity axiom is satisfied. Because causal tensors can describe both mutual information as transfer entropy, the partial information decomposition applies to both measures. Results show that the decomposition closely resembles the decomposition of other another approach that expresses associations in terms of mutual information a posteriori. A negative synergistic term could indicate that there is an unobserved common cause.
Informational Reinterpretation of the Mechanics Notions and Laws
Authors: Bormashenko Edward
Published: February 2020

The informational re-interpretation of the basic laws of the mechanics exploiting the Landauer principle is suggested. When a physical body is in rest or it moves rectilinearly with the constant speed, zero information is transferred; thus, the informational affinity of the rest state and the rectilinear motion with a constant speed is established. The analysis of the minimal Szilard thermal engine as seen from the non-inertial frame of references is carried out. The Szilard single-particle minimal thermal engine undergoes the isobaric expansion relatively to the accelerated frame of references, enabling the erasure of 1 bit of information. The energy ΔQ spent by the inertial force for the erasure of 1 bit of information is estimated as: ΔQ≅5/3 k_B T ̅, which is larger than the Landauer bound but qualitatively close to it. The informational interpretation of the equivalence principle is proposed: the informational content of the inertial and gravitational masses is the same.
Geomorphometric Methods for Burial Mound Recognition and Extraction from High Resolution LiDAR DEMs
Authors: Niculita Mihai
Published: February 2020

Archaeological topography identification from high-resolution DEMs is a current method that is used with high success in archaeological prospecting of wide areas. I present a methodology trough which burial mounds (tumuli) from LiDAR DEMS can be identified. This methodology uses geomorphometric and statistical methods to identify with high accuracy burial mound candidates. Peaks, defined as local elevation maxima are found as a first step. In the second step, local convexity watershed segments and their seeds are compared with positions of local peaks and the peaks that correspond or have in vicinity local convexity segments seeds are selected. The local convexity segments that correspond to these selected peaks are further feed to a Random Forest algorithm together with shape descriptors and descriptive statistics of geomorphometric variables in order to build a model for the classification. Multiple approaches to tune and selected the proper training dataset, settings and variables were tested. The validation of the model was performed on the full dataset where the training was performed and on an external dataset in order to test the usability of the method for other areas in a similar geomorphological and archaeological setting. The validation was performed against manually mapped and field checked burial mounds from two neighbor study areas of 100 km2 each. The results show that by training the Random Forest on a dataset composed of between 75% to 100% of the segments corresponding to burial mounds and ten times more non-burial mounds segments selected using latin hypercube sampling, 93% of the burial mound segments from the external dataset are identified. There are 42 false positive cases that need to be checked, and there are two burial mound segments missed. The method shows great promise to be used for burial mound detection on wider areas by delineating a certain number of tumuli mounds for model training.
Effect of Vermicompost Application on Soil and Growth of the Plant Sesamum indicum L.
Authors: C Vasanth Pandiyan , K Balaji , Saravanan Sujatha , Gunasekaran Shylaja , Srinivasan Gokul Raghavendra , P R Kiresee Saghana , G Manivel
Published: February 2020

This paper aims in studying the effect of vermicompost on soil and growth of the plant Sesamum indicum L. by measuring the its various growth and yield components. For this purpose, a mixture of textile mill sludge, cow dung and saw dust have been mixed in different ratios to produce vermicompost by using the earthworm Perionyx excavates and was compared with inorganic (NPK) and organic fertilizer (FYM). The results of soil quality revealed that the porosity, water holding capacity (WHC), cation exchange capacity (CEC) and occurrence of macronutrients were significantly increased and the particle density were decreased in treatment with 100% vermicompost (VC) followed by soil treated with 50% VC + 50% NPK, on contrary, reduction in porosity, WHC, CEC were noted in NPK treated plots. The effect of vermicompost on plant growth components (root, shoot, leaf area index, branch, DMP) and yield components (pod number, weight, length, seed weight, number of seed, seed yield) were significantly higher in the plots treated with 50% VC + 50% NPK followed by 100% vermicompost than the plots treated only with FYM and NPK. The significant growth upon using vermicompost was accounted by its nutrients composition over other fertilizers.
Adherence to Mediterranean Diet Related with Physical Fitness and Physical Activity in Schoolchildren Aged 6-13
Authors: López-Gil José Francisco , Brazo-Sayavera Javier , García-Hermoso Antonio , Yuste-Lucas Juan Luis
Published: February 2020

Background: The relationship between adherence to the Mediterranean Diet (MD) and both physical fitness (PF) and physical activity (PA) level has been analysed in several studies. The aim of this research was to describe, compare and analyse the level of PF and PA in schoolchildren aged 6-13 in the Region of Murcia, according to adherence to the MD. Methods: A descriptive and cross-sectional study was performed. A total of 370 schoolchildren (44.9% girls) aged 6-13 (8.7±1.8) from six primary schools in the Region of Murcia (Spain). Results: Only 25.9% of the schoolchildren had optimal adherence to the MD. Regarding the scores of the different PF tests in MD groups, only statistically significant differences were found for CRF (p=0.048) in boys. PA level, showed statistically significant differences in both boys (p=0.040) and girls (p=0.016). A positive relationship was found between the KIDMED index and CRF (ρ=.127), standing broad jump (ρ=.133) and PA level (ρ=.235). A higher probability of having a greater CRF (OR=1.17; CI95%=1.02–1.34) and PA level (OR=7.84; CI95%=2.84–21.60) was found in High MD group. Conclusion: These results suggest that an optimal adherence to the MD is associated with higher CRF and PA level in the selected schoolchildren.
Earthquake Safety Assessment of Buildings Through Rapid Visual Screening
Authors: Harirchian Ehsan , Lahmer Tom , Buddhiraju Sreekanth , Mohammad Kifaytullah , Mosavi Amir
Published: February 2020

Earthquake is among the most devastating natural disasters causing severe economic, environmental, and social destruction. Earthquake safety assessment and building hazard monitoring can highly contribute to urban sustainable development through identification and insight into optimum materials and structures. While the vulnerability of structures mainly depends on the structural resistance, the safety assessment of buildings can be highly challenging. In this paper, we consider Rapid Visual Screening (RVS) method which is a qualitative procedure for estimating structural scores for buildings suitable for medium- to high-seismic cases. This paper presents an overview of the common RVS methods, i.e., FEMA P-154, IITK-GGSDMA, and EMPI. To examine the accuracy and validation, a practical comparison is performed between their assessment and observed damage of reinforced concrete buildings from a street survey in the Bingöl region, Turkey, after the 11 May 2003 earthquake. The results demonstrate that the application of RVS methods for preliminary damage estimation is a vital tool. Furthermore, the comparative analysis showed that FEMA P-154 creates an assessment that overestimates damage states and is not economically viable while EMPI and IITK-GGSDMA provide for more accurate and practical estimation, respectively.
The Dynamical Casimir Effect in a Dissipative Optomechanical Cavity Interacting with Photonic Crystal
Authors: Tanaka Satoshi , Kanki Kazuki
Published: February 2020

We theoretically study the dynamical Casimir effect (DCE), i.e., parametric amplification of a quantum vacuum, in an optomechanical cavity interacting with a photonic crystal, which is considered to be an ideal system to study the microscopic dissipation effect on the DCE. Starting from a total Hamiltonian including the photonic band system as well as the optomechanical cavity, we have derived an effective Floquet-Liouvillian by applying the Floquet method and Brillouin-Wigner-Feshbach projection method. The microscopic dissipation effect is rigorously taken into account in terms of the energy-dependent self-energy. The obtained effective Floquet-Liouvillian exhibits the two competing instabilities, i.e., parametric and resonance instabilities, which determine the stationary mode as a result of the balance between them in the dissipative DCE. Solving the complex eigenvalue problem of the Floquet-Liouvillian, we have determined the stationary mode with vanishing values of the imaginary parts of the eigenvalues. We find a new non-local multimode DCE represented by a multimode Bogoliubov transformation of the cavity mode and the photon band. We show the practical advantage for the observation of DCE in that we can largely reduce the pump frequency when the cavity system is embedded in a narrow band photonic crystal with a bandgap.
General Quantum Theory No Axiom Presumption: I ----Quantum Mechanics and Solutions to Crisises of Origins of Both Wave-Particle Duality and the First Quantization
Authors: Huang C. , Huang Yong-Chang , Song Jia-Min
Published: February 2020

Density distribution function of classical statistical mechanics is generally generalized as a product of a general complex function and its complex Hermitian conjugate function, and the average of classical statistical mechanics is generalized as the average of the quantum mechanics. Furthermore, this paper derives three ones of the five axiom presumptions of quantum mechanics, makes the three axiom presumptions into three theorems of quantum mechanics, not only solves the crisis to hard understand, but also gets new theories and new discoveries, e.g., this paper solves the crisis of the origin of the wave-particle duality (i.e., complementary principle), derives operators, eigenvalues and eigenstates, deduces commutation relations for coordinate and momentum as well as the time and energy, and discovers quantum mechanics is just a generalization ( mechanics ) theory of the square root of ( density function of ) classical statistical mechanics, which will make people renew thinking modern physics development. In addition, this paper discovers the reason why the time derivative of Schrȍdinger doesn’t takes the derivative of space coordinates. Therefore, this paper gives solution to the Crisis of the first quantization origin.
Paravertebral Block Versus Preemptive Ketamine Effect on Pain Intensity after Posterolateral Thoracotomies: A Randomized Controlled Trial
Authors: Borys Michał , Hanych Agata , Czuczwar Mirosław
Published: February 2020

Severe postoperative pain affects most patients after thoracotomy and is a risk factor for post-thoracotomy pain syndrome (PTPS). This randomized controlled trial compared preemptively administered ketamine versus paravertebral block (PVB) versus control in patients undergoing posterolateral thoracotomy. The primary outcome was acute pain intensity on the visual analog scale (VAS) on the first postoperative day. Secondary outcomes included morphine consumption, patient satisfaction, and PTPS assessment with Neuropathic Pain Syndrome Inventory (NPSI). Acute pain intensity was significantly lower with PVB compared to other groups at four out of six time points. Patients in the PVB group used significantly less morphine via a patient-controlled analgesia pump than participants in other groups. Moreover, patients were more satisfied with postoperative pain management after PVB. PVB, but not ketamine, decreased PTPS intensity at 1, 3, and 6 months after posterolateral thoracotomy. Acute pain intensity at hour 8 and PTPS intensity at month 3 correlated positively with PTPS at month 6. Bodyweight was negatively associated with chronic pain at month 6. Thus, PVB but not preemptively administered ketamine decreases both acute and chronic pain intensity following posterolateral thoracotomies. The trial was prospectively registered at the Australian New Zealand Clinical Trial Registry (https://www.anzctr.org.au/; ACTRN12616000900415; 07 July 2016).