bluuebunny/crossref_metadata_2025 huggingface dataset:
Beryllium-silicon disorder and rare earth crystal chemistry in gadolinite from the White Cloud pegmatite, Colorado, USA
Authors: Allaz Julien M. , Smyth Joseph R. , Henry Rhiana E. , Stern Charles R. , Persson Philip , Ma Joy J. , Raschke Markus B.
Published: January 2021

Gadolinite, REE2FeBe2Si2O10, is a monoclinic orthosilicate member of the gadolinite supergroup of minerals and occurs in beryllium and rare earth element (REE) bearing granites, pegmatites, and some metamorphic rocks. Gadolinite from the White Cloud pegmatite, South Platte Pegmatite district, Colorado, USA, has been investigated and shows unusually variable REE compositions and distinct Be-Si disorder. Crystal structure and chemistry of two petrographically distinct gadolinite samples from this locality have been studied by electron microprobe chemical analysis, laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS), single-crystal X-ray diffraction (XRD), and micro-Raman spectroscopy. Within these samples, the gadolinite was found to range from gadolinite-(Y) to gadolinite-(Ce). Regions of nearly full occupancy of Fe at the M site, and partial substitution of Si for Be at the Q tetrahedral site, as well as substitution of Be for Si at the T site were observed, with up to 15% vacancy at the Fe site and up to 15% disorder between Be and Si at distinct tetrahedral sites elsewhere. The layered nature of the crystal structure allows for large variation of the radius of the cation at the A site which contains the REE. This study shows that Be may substitute for Si and that Be may be more abundant in geochemical systems than previously assumed.
Estimation of Phenylalanine Hydroxylase Activity in Patients with Chronic Renal Failure
Authors: Najlaa Jawad Hasani
Published: January 2021

Renal failure is a serious disease that affects the kidney and leads to different chemical changes and most

cases lead to death .The aim of the study is to measure the activity of phenylalanine hydroxyls (PAH), and

biochemical variables (urea, creatinine, and albumin) In the blood and urine of healthy and chronic renal

failure (CRF) individuals. The study included 80 patients aged between 78 and 20 years and 80 healthy

subjects between the ages of 23-65 years. The results showed significant differences in the activity of PAH

at P ? 0.0001 in sera and urine chronic renal failure patients compared to healthy, as the of the activity

significantly decreased in sera of patients with CRF and increased in urine. The mean activity of PAH was

54.67 ± 6.03 (IU / ml) in sera for CRF patients, whereas in healthy individuals it was 120.83 ± 23.21 (IU

/ ml), and the average activity of enzyme was 61.34 ± 7.12 in urine of patients with CRF compared with

33.87 ± 3.08 ( IU / ml) in healthy individuals. The activity of PAH enzyme was compared according to age

groups, showing a decrease in the age group more than 45 years more than those in the age group less than

45 years with significant differences. In conclusion, the current study demonstrated that CRF is associated

with loss of secretory function, and metabolism Endocrine actions in the kidneys, seems likely to lose renal

activity phenylalanine hydroxylase.
The Relationship of Self-Motivation in Diabetes Mellitus Management with Blood Sugar Levels of Diabetes Mellitus Type II Clients
Authors: Berthiana T
Published: January 2021

The purpose of this study was to determine the relationship of self-motivation to diabetes mellitus (DM)

management with blood sugar levels of DM type ii clients in Outpatient Polyclinic Installation in Dr. Doris

Sylvanus Hospital Palangka Raya. The research uses descriptive correlational with cross sectional research

design. The sampling technique uses purposive sampling. The respondents of this study were 40 people. Data

collection using a questionnaire and recording the value of blood sugar from the results of laboratory tests

in the client report status. Statistical tests use the Chi-Square test. The results of statistical analysis revealed

that self-motivation on clients was in the unfavorable category of 32 people (80%), blood sugar levels were

in the high category of 26 people (65%) with a p-value of 0.001 (p <0.05). There is a significant relationship

between self-motivation to DM management with blood sugar levels of DM type II clients in the Outpatient

Polyclinic Installation of Dr. Doris Sylvanus Hospital Palangka Raya.
Islamic Ethical Value of Customary Basis of Marriage Proposal Application in Indonesia
Authors: Edy Sismarwoto
Published: January 2021

This community legal observance in the field of Islamic marriage is based on the concept of good deeds

which can be said to be deontologically valid. The approach is based on deon/obligations arising from

the principles of Islamic life. This research method is an empirical method that looks at social reality and

is carried out with an ethical approach to understanding the meaning of deeds in the marriage process.

Philosophical analysis is used to analyze values in the conduct of the marriage process of Islamic societies

in Indonesia. The results showed that in Indonesian Islamic society, marriage and marriage registration

had become a community culture that had a philosophical value of worship. This happens because there

is enculturation in the form of symbols of Islamic teachings that make it easier for people to recognize the

value of an action. Proposal and registration of marriage has become the culture of the Islamic community

with the symbol of halal and worship in marriage. Thus the community’s obedience to Islamic law and state

law is not coercion carried out by state power, but is the legal culture of Islamic society.
Blood pressure, Blood Sugar, Smokers and their Relationship with Physiological Variables of Some Risk Factors
Authors: Nada Saad Naji Al-Taee
Published: January 2021

This study deals with the physiological measurements of fasting blood sugar (FBG), clinical blood pressure

(CBP) and smokers and their association with risk factors (obesity, gender and age) among university

students. A total of 257 students (77 females and 180 males) were registered. Including 41 healthy and 42

students who were FBG; 33 were healthy and 69 were suffering from CBP; 39 non smokers and 33 students

who were smokers; aged 19-26 years. A statistically not-significant connection was found between FBG,

CBP and smoking with obesity rates; but a significant difference between smoking and CBP with age and

gender, respectively. These findings highlight the prevalence of FBG and CBP also smoking in students and

its relation to certain risk factors such as obesity, sex and age among selected student groups.
Recent Root Canal Instruments and Techniques: A Review
Authors: Zeena T. Abdulhadi Alani
Published: January 2021

In this article the properties and advantages of NITI alloy were presented with the development of new types of

endodontic files and instrumentation techniques. Each new one was designed to solve disadvantages present

in older one. NITI files always considered suitable for negotiation of curved canals, this automatically will

reduce any possibility of some problems like transportation, ledge formation and zipping within the canal.

Cleaning and shaping of the root canal space is the most important to create a sterile area, organisms free. In

order to reach this goal (sufficient information of current development of instruments and instrumentation

techniques is needed). With the new versions which are rapidly becoming available, the Dentist may find it

a little bit difficult to choose the most suitable file and technique for an individual case. Practitioners must

always keep in mind that benefits and weaknesses is present in most file systems. In other hand clinical

experience, usage safety, handling properties and outcomes of the case, should decide a particular design

fate.

Conclusion: Endodontic treatment files and techniques are very rapidly developed and this is the most

important point,since each new design or technique will supply advantages which improve the endodontic

treatment work and prognosis.
The Prevalence of Sperm Parameters for Infertile Males in Thi-Qar City
Authors: Sumeya Ghanawy AL-Najjar
Published: January 2021

Objective Male infertility is a term in which the male is not capable to attain pregnancy in a female. It occurs due to a lack of semen and low-quality semen. Semen Quality is referred to as a surrogate measure of male fecundity. This study aims to assess the frequency of sperm factors in infertile men in Thi-Qar City. Materials and Methods: This study involved an infertile couple, seminal fluid analysis (SFA) was done to evaluate male factors. Males with normal seminal fluid parameters were excluded. Regarding male, SFA was examined according to WHO 2010. Information such as age, duration of infertility and type of infertility were taken Results Among the percentage of abnormal sperm parameters for infertile couples in which the largest percentage was for asthenozoospermia that represent 66.70% of all infertile males. The second sperm abnormality is 12.13% for oligoasthenozoospermia. Asthenoteratozoospermia and oligoasthenoteratozoospermia have the same percentage (4.4). Azoospermia represents 6.7% while the lower percentage for teratozoospermia. Conclusions largest percentage was for asthenozoospermia that represents 66.70% of all infertile males .
Evaluation of Amateur and Professional Tattoo Removal by the Q Switched Nd:YAG Laser
Authors: Nibras A. A. Hindy
Published: January 2021

Background: A tattoo is visible and permanent pigmentation of the skin secondary to the deliberate or accidental deposition of exogenous pigment within the dermis. A variety of procedures have been used to remove tattoos, such as laser therapy, surgical excision, and dermabrasion. QS laser treatment can result in good cosmetic outcomes and complete or near-complete removal of many unwanted tattoos.Objective: to evaluate the QS Nd:YAG laser effects for amateur and professional tattoos removal.Materials & Methods: The study was done on 293 tattoo lesions from 176 patients (in both genders) , there were 239 amateur tattoos (136 patients) and 54 professional tattoos(40 patients). Tattoos on a wide range of body sites (limbs, feet, face, chest, shoulders and legs) were treated. Ages were between 17- 60 years. In this work, tattoos were divided to amateur and professional tattoos. A Q-switched Nd:YAG laser system was used throughout this study. All tattoos containing black and blue pigment were treated at 1064 nm. Tattoos containing red pigment were treated at 5 32nm. Treatment was scheduled at 4-6 weeks intervals and continued until maximum clearance of the tattoo was achieved, and the number of sessions varies from one to five sessions. For assessment of degree of lightening the method proposed by Lanigan was used: grade 1, complete response (> 95% lightening); grade 2, excellent response (76–95% lightening); grade 3, good response (51–75% lightening); grade 4, fair response (26–50% lightening); grade 5, poor response (0–25% lightening).Results: Amateur tattoos were often more numerous than professional tattoos. Eighty per cent of tattoos (198 of 239) were clinically clear at the time of analysis, this included 70.7% (169 of 239) which were ? 95% clear. Overall 56.6% of amateur tattoos were clinically clear after two treatments, and 82% (110 of 134) were clinically clear after 2-3 treatments, while the clinical clearance rate was 40% after six treatments for professional black tattoos. It is anticipated that response rates will increase when tattoos at an early stage of treatment receive further treatments,and P value was (0.004) which mean that there is significant difference between two groups.Conclusion: Amateur tattoos generally require fewer treatment sessions and the response is better than professional tattoos.
La psicología crítica como psicología histórica-cultural: Las dimensiones políticas y las limitaciones del conocimiento psicológico
Authors: Parker Ian
Published: January 2021

Este capítulo explora la relación entre la teoría y la práctica de la psicología crítica, centrándose en la crítica del esencialismo, individualismo y el universalismo de la psicología social convencional y sentando las bases para un enfoque hacia la política y la justicia trabajando a favor y en contra de la disciplina. Argumento en este capítulo que la “psicología crítica” contemporánea es necesariamente social y ésta como forma de la psicología crítica histórica y cultural, siempre es necesariamente política. Esta naturaleza política de la psicología histórico-cultural, tiene que ser aclarada, no obstante, para ser contrastada con las maneras en las que la “política” algunas veces es entendida en “psicología comunitaria” . En este capítulo abordo preguntas de “alienación”, las maneras en las que la psicología crítica se configura a sí misma como respuesta de la psicología convencional como una garantía ideológica para el capitalismo. Describo las áreas emergentes de la búsqueda en la psicología crítica, tomando el ejemplo en particular de la psicología critica en Gran Bretaña, para ilustrar las oportunidades y los riesgos con respecto a nuestra preocupación frente a la justicia social que se relaciona íntimamente con las dificultades anti-capitalistas.
Revisión sistemática en la literatura científica del uso de la realidad virtual como tratamiento de los trastornos psicosomáticos
Authors: Herrero Arnedo Nerea , Almudéver Campo Laura
Published: January 2021

Antecedentes: En la sociedad actual existen numerosos avances tecnológicos y comunicativos que modifican y generan cambios en los servicios sociosanitarios. Uno de ellos es la realidad virtual (RV), cuyo uso cada vez es más frecuente en algunas áreas de la salud para el tratamiento de ciertas patologías. Dicho método crea espacios tridimensionales para simular la realidad, de tal manera que la persona tiene la sensación de estar en el espacio generado e interactuar con los objetos de ese mundo virtual creado para la ocasión. Objetivo: Este estudio trata de conocer el uso de la realidad virtual aplicada a la salud, más concretamente al ámbito de los trastornos psicosomáticos, como el dolor, las fobias y la ansiedad. Metodología: Se ha realizado una revisión de la literatura científica en las bases de datos Pubmed, Epistemonikos, Dialnet, Cochrane, Biblioteca Virtual en Salud (BVS), Lilacs, Cuiden y Scielo, seleccionando artículos publicados en español o inglés, desde enero de 2014 a diciembre de 2018. Resultados: Tras la aplicación de los criterios de inclusión y exclusión, se seleccionaron 17 artículos para su análisis. La lectura de éstos desprende que la realidad virtual ayuda a disminuir la ansiedad, las fobias y el dolor de los procedimientos sanitarios, consiguiendo desviar y distraer la atención de los pacientes. Conclusiones: La realidad virtual es un método efectivo para el tratamiento de ciertos trastornos psicosomáticos, aunque se detallan algunos aspectos negativos, como la falta de más investigaciones para corroborar la evidencia científica actual.
Concepciones mesoamericanas de la subjetividad y su potencial crítico ante la psicología dominante
Authors: Pavón-Cuéllar David
Published: January 2021

Situándome en la tradición de las perspectivas psicológicas indígena y ancestral, expongo ocho aspectos subjetivos amenazados por la modernidad capitalista e ignorados por la psicología dominante occidental predominantemente europea y estadounidense, pero aún considerados y salvaguardados en los pueblos originarios de Mesoamérica, a saber, la variabilidad, la multiplicidad, la extimidad, la apertura, la inesencialidad, la historicidad, la individualización y la singularidad. Reconstituyo estos aspectos a partir de informaciones proporcionadas por la palabra de los propios indígenas o de quienes han sabido escucharlos, como religiosos del período colonial o cronistas, historiadores, antropólogos y etnólogos que han trabajado en los últimos siglos en México y Centroamérica. El análisis de las informaciones recabadas me permite, por un lado, apreciar lo que estamos desconociendo y perdiendo en las sociedades latinoamericanas modernas, y, por otro lado, intuir por qué no conseguimos ni reconocerlo ni preservarlo. Es así como los saberes de los pueblos originarios pueden constituir un medio eficaz al relacionarnos críticamente con el capitalismo colonial y neocolonial, con su dispositivo psicológico y con aquello en lo que nos ha convertido y en lo que nos continúa convirtiendo. El presente artículo forma parte de una investigación más amplia enmarcada en la psicología crítica y dedicada a la reconstrucción de las concepciones mesoamericanas de la subjetividad.
Posiciones profesionales en procesos de atención psicosocial a víctimas de violencia sociopolítica
Authors: Moreno Camacho Manuel Alejandro , Molina Valencia Nelson
Published: January 2021

Este artículo hace parte de los resultados de una serie de investigaciones sobre el dispositivo atención psicosocial a víctimas del conflicto armado en Colombia. Está orientado por la pregunta ¿cómo son las posiciones asumidas por profesionales en psicología y trabajo social, en el desarrollo de procesos de atención psicosocial en el marco de la implementación del Papsivi, en el periodo 2017-2018, en el Valle del Cauca? La estrategia metodológica incluyó la participación en encuentros de conversación de casos y la realización de entrevistas con profesionales de dicho programa. En el análisis se hizo énfasis en dos categorías: interpretaciones de la estrategia y actuaciones profesionales en los procesos de atención psicosocial. En los resultados se destaca que las posiciones profesionales emergen como resultado variable-indeterminado, de la combinatoria compleja entre una estrategia prescrita, las interpretaciones subjetivas de dichas prescripciones y las actuaciones desempeñadas en las relaciones con los destinatarios de un programa de intervención. En el contexto de la atención psicosocial, en el marco del Papsivi, las profesionales expresan interpretaciones en torno a la apropiación de los objetivos de la estrategia, las consideraciones sobre el ideal de rehabilitación y el uso de las orientaciones metodológicas. En sus actuaciones sugieren principios como: contribuir al reconocimiento de aspectos emocionales-psicológicos, a través de prácticas de escucha orientadas a que en los sujetos se produzca un decir lo no dicho, que cumpla una función de vaciamiento emocional que favorezca el darse cuenta de sus recursos y contribuya a la construcción de nuevos sentidos.
Consideraciones sobre el deseo y la transferencia en la educación
Authors: Flores Acosta Mariela , Cruz Martínez Mauro
Published: January 2021

El presente trabajo parte de la necesidad de reflexionar sobre el lugar del deseo, la transferencia y el ejercicio del poder desde la teoría psicoanalítica en el campo educativo. Ya que lo educativo es uno de los espacios donde se pone en juego el ejercicio del poder ligado a los intereses del sistema capitalista. Por lo que es necesario pensar el sujeto de la educación que se produce actualmente desde ciertas nociones foucaultianas articuladas al psicoanálisis. El objetivo es proponer una forma diferente de que el profesor se coloque frente al saber en el proceso de enseñanza, para contribuir a un mejor aprendizaje por parte de los estudiantes. Encontrando que es a partir de darle un lugar a la subjetividad, al deseo, a la palabra y a lo singular, que se puede encontrar otra forma en la que los sujetos den un sentido distinto a su educación y por lo tanto, los lleve a descolocarse de la posición de objeto en la que el sistema los ha puesto. Lo cual nos permite concluir que la transferencia (ese vínculo que se establece entre profesor-estudiante) es el punto desde el cual se puede empezar a estructurar y organizar el proceso de enseñanza-aprendizaje de una manera diferente.
Nachhaltig Autos lackieren
Authors: Mohr Carsten , Paulus Marika
Published: January 2021

In modernen Lackierereien tragen der effiziente Einsatz von Ressourcen und Materialien sowie neueste Technologien maßgeblich zur Luftreinhaltung bei. Die Lackierereien der Audi AG setzen dabei Benchmarks: Sie senkten die Emissionen an organischen Lösemitteln um 50 Prozent und leisten so ihren Beitrag zu den umfassenden Nachhaltigkeitszielen des Unternehmens.
PFC: ein Problem für Generationen
Authors: Kaspryk Olaf , Rodriguez Lorena
Published: January 2021

Mehr als 250 Schadensfälle mit diesen Chemikalien sind in Deutschland bekannt. Langsam bekommt die Grundwasserbelastung mit diesen Substanzen auf politischer Ebene mehr Gewicht. Und: Die Reinigung dieses Rohwassers verteuert das Trinkwasser.
Vom Rest- zum Rohstoff
Authors: Paasche Alexander
Published: January 2021

Zum wirtschaftlichen Wiederverwerten wird ab und an ein Zusatzstoff benötigt. Altreifen etwa lassen sich mit „Vestenamer“ zu einem robusten Wertstoff verarbeiten und als Gummimehl in Asphaltdeckschichten im Wirtschaftskreislauf halten.
Asphaltarbeiter weiter ungeschützt
Authors: Rühl Reinhold
Published: January 2021

Ein neuer Arbeitsplatzgrenzwert für atemwegsreizende Dämpfe und Aerosole beim Verarbeiten von Bitumen sorgt für Ärger. Dieser ist zehnfach schärfer als der von 2000 und doppelt so scharf wie der von 2011. Doch weil Straßenbauverbänden dieser zu streng war, wird er jetzt erst von 2025 an gelten. Dabei lässt sich Bitumen so verarbeiten, dass dieser Wert eingehalten wird. In Frankreich ist dies jetzt Pflicht.
Klimapaket: energieintensive Unternehmen im Nachteil
Authors: Vortisch Björn
Published: January 2021

Das Bundeskabinett hat mit dem Brennstoffemissionshandelsgesetz die erste konkrete Maßnahme des Klimapakets verabschiedet. Doch das Gesetz benachteiligt nach Ansicht eines weltweit tätigen Energiedienstleisters deutsche Unternehmen im internationalen Wettbewerb und zerstört Planungssicherheit für Betreiber und Investoren. Der Dienstleister fordert die Bundesregierung daher dringend zu Nachbesserungen auf und schlägt konkrete Maßnahmen vor.
Bis zum letzten Rest
Authors: Schneider Michael
Published: January 2021

Die neue Sortieranlage von Remondis in Erfstadt erreicht seit Anfang 2019 eine nie da gewesene Sortiertiefe. Bereits heute hält das Unternehmen dort die Vorgaben aus dem deutschen Verpackungsgesetz für das Jahr 2022 ein. Eine Besonderheit: Aus den Sortierresten werden im Jahr auch noch rund 2.000 Tonnen Glas herausgeholt.
Rechtsänderungen
Authors: Prorok Patricia , Stern Dominik
Published: January 2021

Auf der Agenda des Gesetzgebers in Berlin standen unter anderem das Brennstoffemissionshandelsgesetz, also der nationale Emissionshandel für fossile Heiz- und Kraftstoffe, sowie neue Regeln für Energieaudits von Unternehmen. Und in Brüssel einigten sich Vertreter des EU-Parlaments und des Umweltrates auf eine Novelle der Trinkwasserrichtlinie.
Für eine treibhausgas-neutrale Chemie
Authors: Schulte Jenna Juliane
Published: January 2021

Der Verband der Chemischen Industrie (VCI) und der Verein Deutscher Ingenieure (VDI) haben die Plattform „Chemistry4Climate“ gegründet, um gemeinsam Lösungen für eine treibhausgasneutrale Chemie zu erarbeiten.
Eigener Zeitserver als beste Lösung
Authors: Christoph Carolin
Published: January 2021

Eine präzise Uhrzeit ist für viele Netzwerke und Anwendungen essenziell. Insbesondere vor dem Hintergrund von Internetsicherheit, dauerhafter Verfügbarkeit und Zuverlässigkeit stellt sich für Anlagenbetreiber und Unternehmen die Frage nach einer optimalen Zeitsynchronisation. Mit dem neuen Timeserver einer niedersächsischen Firma ist eine robuste einfach handhabbare Lösung verfügbar.
Motoröflaschen wieder befüllen
Authors: Maier Sebastian
Published: January 2021

Eine nordrhein-westfälische Firma, die Schmierstoffe und Frostschutzmittel herstellt und weltweit vertreibt, hat ein einzigartiges Pfandsystem eingeführt: Seit Oktober 2018 sammelt sie Schmierstoffbehälter aus Kunststoff wieder ein – und zahlt 25 Cent pro Behälter.
Erfolge in Serie
Authors: Monsheimer Sylvia
Published: January 2021

Der 3-D-Druck entwickelt sich vom Nischenverfahren zur Fertigungstechnik für Großserien. Ein Essener Spezialchemikalienhersteller liefert für wichtigen Technologien passgenaue Materialien und treibt die Entwicklung von Druckern der nächsten Generation voran.
Redox-Flow-Batterien für die Energiewende
Authors: Janoschka Tobias
Published: January 2021

Wind- und Solarstrom müssen für das langfristige Gelingen der Energiewende effizient und nachhaltig zwischengespeichert werden. Moderne und flexibel einsetzbare Redox-Flow-Batterien können den stationären Speichermarkt vom harten Ressourcenwettbewerb für Akkus in der E-Mobilität entkoppeln. Die neueste Generation dieser Batterien speichert Strom sogar ohne Metalle und etabliert sich als Alternative zu Lithium-Ionen-Akkus.
Aus Green Cooling wird Clean Cooling
Authors: Kaden Peter
Published: January 2021

Die meisten fluorierten Kältemittel, die als ultimative Lösung für das Herunterfahren der Treibhausgaspotenziale dieser Kältemittel gelten, bergen auf den zweiten Blick Umweltrisiken. Natürliche Kältemittel hingegen sind die einzig wahre Alternative. Eine bayrische Firma treibt die Verwendung von Wasser voran.
Fahrräder aus Bambus
Authors: Habke Felix , Hahn Natalie
Published: January 2021

Kieler Studenten gründen ein Social-Business und schaffen damit langfristig Perspektiven in Ghana. Der Clou: Ein großer Teil der Wertschöpfung bleibt in dem afrikanischen Land.
Mikrobielles Gold
Authors: Gabor Esther
Published: January 2021

Wer den steigenden Bedarf an Edelmetallen nachhaltig bedienen möchte, für den können biotechnologische Verfahren die Lösung sein. Eine hessische Firma setzt hierfür Bakterien ein, um Edelmetalle aus Abfällen zurückzugewinnen. Ein Umdenken in der Recyclingbranche ist jedoch erforderlich, denn herkömmliche Prozesse und Anlagen sind für biotechnologische Verfahren nicht geeignet.
Forschungsergebnisse schneller in den Markt
Authors: von Wulffen Caroline
Published: January 2021

Nachhaltigkeit, Kreislaufwirtschaft, Green Deal – die Richtung, in die sich Wirtschaft und industrielle Produktion bewegen soll, ist eindeutig. Die industrielle Biotechnologie hätte dazu viel beizutragen. Dennoch finden viele Forschungsergebnisse nur sehr langsam oder gar nicht in den Markt. Woran liegt das, und wie kann man Abhilfe schaffen?
Ressourcen sparen mit effizienten Enzymen
Authors: Vogel Andreas
Published: January 2021

Der Einsatz von Enzymen ist in vielen Prozessen nicht mehr wegzudenken. Mit einem neuen Verfahren – der gerichteten Enzym-Evolution – lassen sich diese gezielt und effektiv verbessern. Dabei haben sich zwei Strategien durchgesetzt: hoher Durchsatz durch Automatisierung oder wissensbasiert, um wenig experimentieren zu müssen. Eine Leipziger Firma entwickelt mit dem wissensbasierten Ansatz erfolgreich Enzyme für die industrielle Anwendung.
Solarmodule grün unterlegt
Authors: Piecha Patrick
Published: January 2021

Ein Ansatz aus Karlsruhe mit einer Retentionswanne und einem Aufständerungssystem ermöglicht es, Flachdächer zu bepflanzen und mit Photovolatik-Modulen auszustatten. Das Besondere: Die Bepflanzung erhöht den Wirkungsgrad der Module.
Von Deponien, digitalen Briefen & Häusern
Authors: Prorok Patricia , Stern Dominik
Published: January 2021

In Deutschland dürfen recycelbare Abfälle von 2024 an nicht mehr deponiert werden, das Gebäudeenergiegesetz fasst viele Regeln zu Energie in Gebäuden aller Art zusammen und die EU führt den digitalen Frachtbrief ein.
Virtuelle Kraftwerke auf dem Vormarsch
Authors: Berthold Malte
Published: January 2021

Virtuelle Kraftwerke fassen eine große Zahl unterschiedlicher dezentraler Energieanlagen zu einem wirkungsvollen Verbund zusammen und gelten daher weltweit als Schlüsseltechnologie für die Energiewende - auch in der Türkei. Dort wird das bislang Einzige seit 2017 mit Hilfe eines niedersächsischen Energie- und Softwarespezialisten betrieben.
Tapping to hip-hop: Effects of cognitive load, arousal, and musical meter on time experiences
Authors: Wöllner Clemens , Hammerschmidt David
Published: January 2021

Experiences of time vary intra- and interindividually, depending on factors such as attentional resource allocation and arousal. Music as a temporal art that is structured by multiple temporal layers is ideal for investigating human time experiences. The current study used examples of hip-hop music that varied in arousal but were constant in tempo. Participants judged the passage of time to be quicker when cognitive load was high in a dual-task condition, and perceived duration to be shorter when performing a concurrent motor task (tapping along with the music). Perceived musical arousal did not affect subjective time. Attending to a higher metrical level by tapping with half notes resulted in shorter duration estimates and a quicker passage of time, compared to tapping with eighth notes of the same music. Results were not influenced by spontaneous motor tempo, musical expertise, preference or familiarity with the music. Taken together, these findings indicate consistent effects of cognitive load and attention to meter on time experiences.
Mahremiyet, Verileştirme ve Dijital Kovid-19 Takip Uygulamaları
Authors: ALTUNCU Safa Nur , ALTUNCU M. Tarık
Published: January 2021

İlk dalga Kovid-19 salgınının ardından otoriteler ve bazı özel şirketler salgınla mücadeleyi ve filyasyonu yaygınlaştırmak adına çeşitli dijital uygulamalar üretme hazırlıklarına başlamıştır. Kullanıcıların riskli kişilerle temas kurup kurmadığını takip eden bu uygulamaların kişilerin Küresel Konumlama Sistemi (GPS) ve bluetooth gibi teknolojiler vasıtasıyla lokasyonlarını ve bireyler arası mesafeleri ölçmesi, güvenlik ve mahremiyet kaygısını da beraberinde getirmektedir. Google ve Apple, 20 Mayıs 2020 tarihinde, bireylerin Kovid-19 pozitif vakalarla yakın temasa maruz kalıp kalmadıklarının tespit edilmesini kolaylaştırmaya yönelik "teknolojiyi halk sağlığı otoritelerine yardım için kullanmak" sloganıyla, kamu sağlığı otoritelerinin oluşturdukları dijital filyasyon uygulamaları tarafından kullanılabilen maruz kalma ara yüzünü tanıtmıştır. Bu arayüzün diğer merkezî (centralised)filyasyon uygulamalarına nazaran dağıtık (decentralised) bir sistemle işliyor olması, bu sisteme kullanıcıların mahremiyeti açısından güven oluşturmaktadır.Koronavirüs salgını sırasında teknolojik çözümlerin kullanılması temas takibi için avantajlı görünse de bazı kısıtlamaları da beraberinde getirmektedir. Sosyolojik bir perspektiften bakıldığında, bu çözümleri kullanmanın kritik bir sonucu, insanların verileştirilmesidir ve bu durum bireylerin metalaştırılmasına giden yolu açmaktadır. Bu makale, farklı aktörler tarafından oluşturulmuş dijital filyasyon uygulamaları aracılığıyla üretilen verinin, veri sahipliğinin ve mahremiyet ölçülerinin biyopolitika üzerinden güncel bir okumasını yaparak dijital filyasyon uygulamaları hakkında bir durum değerlendirmesi sunmayı amaçlamaktadır. Aynı zamanda, uygulama kullanıcılarının mahremiyeti ihlal edecek durum ve sistemlerin farkına varmak adına veri okuryazarı olmalarının ehemmiyetini göstermeyi hedeflemektedir.
Positioning in Shoulder Arthroscopy
Authors: Al Dosari Mohd Al Ateeq , Hameed Shamsi Abdul , Fuad Mazhar , Babikir Elhadi
Published: January 2021

Arthroscopy of the shoulder has become a routine surgical procedure for the diagnosis and treatment of diff erent shoulder disorders. Intraoperative patient positioning is a major determinant in the successful outcome of shoulder arthroscopy procedures. Two positioning methods are commonly described, the lateral decubitus and the beach chair position. Each has its advantages and disadvantages. There is no consensus on the best position. The optimal position should improve visualization, enhance accessibility and minimize complications. In this review we aim to describe the advantages and disadvantages of each position and provide tips to avoid them.
A Review on Existing Tetracyclines Analogues and Their Pharmacologically Targeted SAR
Authors: Tanveer Samreen , Masood Athar , Ashiq Kanwal , Qayyum Mehwish , Asif Bajwa Maydda , Shah Rukh Asma , Arshad Afshan , Sattar Raeesa
Published: January 2021

Background: Tetracyclines belong to a class of broad spectrum antibiotics. Around the globe, they are prescribed to treat various gram negative and gram positive bacterial infections. Once in the cell, they reversibly bind to the receptors which are located on 30S subunit of bacterial ribosome. They act by averting the protein synthesis, in turn, halting the bacterial growth.

Aim and Objectives: The aim of current review is to study tetracyclines, identifying potential activity against infections and highlighting the microbial resistance associated with various analogues.

Material and Method: The data for this review is collected from various databases including Scopus, PubMed, Springer Link and Google Scholar. To ensure the credibility only indexed articles were used in current study.

Result: The outcome of the study has suggested that tetracyclines and number of its analogues show selective bioactivity and strength to the biological targets. Through modification at certain positions, activity of drug is changed substantially. This not only affects therapeutic activity and safety profile but also has influence the bacterial resistance.

Conclusion: As antibiotic resistance amongst bacteria is emerging tremendously, demanding more research. It is still needed to synthesize the novel analogues that would be helpful to cure infections caused by the resistant bacteria.  Further these analogues can be tagged with radioisotopes that would be helpful for diagnosis and treatment of infectious diseases.
Correlation between Sonographic Findings of Maternal Thyroid Gland and Thyroid Function Tests during Pregnancy
Authors: Rasool Maimoona , Maryam Sarah , Noor M. Sohail Anjum , Fatima Mehreen , Ayaz Sultan , Younis Muhammad Numair , Gilani Syed Amir , Bacha Raham , Rasool Maria , Ayesha Sadaf , Farooq Muhammad yousaf
Published: January 2021

Background: Pregnancy has great influence on maternal thyroid gland. It induces significant physiological as well as hormonal changes that alters the maternal thyroid function. Our goal was to determine this pregnancy associated changes in thyroid gland.

Objective: To correlate the sonographic findings of maternal thyroid gland with thyroid function tests during pregnancy.

Material and methods: 135 pregnant women were recruited in this study, data of TSH, T3 and T4 was obtained and correlated it with the sonographic findings of maternal thyroid gland in each trimester of pregnancy.

Results: In the 135 sampled pregnant women, mean thyroid gland volume was 4.08±1.19 cm3. The mean levels of T3, T4 and TSH were v3.37±.44 pmol/L, 14.96±2.49 pmol/L and 1.21±.92 mIU/L respectively. A remarkable correlation between thyroid hormones and thyroid volume was observed.

Conclusion: It is concluded that the ultra-sonographic findings is correlated with the thyroid function tests during pregnancy.
New records and conservation of Passiflora L. (Passifloraceae s.s.) in Rio de Janeiro, Brazil
Authors: Milward-de-Azevedo Michaele Alvim , Gonçalves Fernandes Natália Brandão
Published: January 2021

Passiflora L. belongs to the family Passifloraceaesensu stricto, and comprises 700–750 species. There are approximately 161 known species of the family in Brazil, of which 153 belong to Passiflora, 89 are endemic, 83 occur in the region of the Atlantic Domain; 40 occur in Rio de Janeiro State (RJ). Using field samplings techniques and scientific collection analyses, we present here new geographic records for Passiflora deidamioides Harms, P. imbeana Sacco, P. junqueirae Imig & Cervi, and P. truncata Regel for RJ, principally in the Serra dos Órgãos National Park (PARNASO). Geographic distribution data was used to calculate the Extension of Occurrence (EOO) and Area of Occupancy (AOO) of the species. Passiflora junqueirae, previously considered endemic to Espírito Santo State, now has new records for RJ. Passiflora imbeana and P. truncata are extended into RJ, being recorded there for the first time in the municipality of Teresópolis. The four species are cited for the first time in PARNASO, occurring between 1,000 and 1,700 m.a.s.l. in Montane and Upper Montane Atlantic Rainforest. We provide taxonomic information, distribution maps, and the conservation status of the species.
Une analyse comparative des territorialités du vote au Maroc et en Tunisie : trajectoires politiques et électorales
Authors: Van Hamme Gilles , Goeury David , Ben Rebah Maher
Published: January 2021

Dans certains pays du Nord de l’Afrique, les révolutions de 2011 ont donné un sens politique différent aux élections, puisque, comme cela a été le cas en Tunisie ou, pour un temps, en Égypte, elles décident directement de l’accès au pouvoir politique. Dès lors, les ressorts du vote au niveau collectif et individuel en ont été bouleversés, donnant plus de pertinence aux analyses électorales visant à comprendre les influences multiples et complexes qui orientent les choix des électeurs. S’inscrivant dans ce nouvel élan, nous avons mené des analyses conjointes sur les processus électoraux au Maroc, en Tunisie et en Égypte, à partir de 2011. Dans cet article, l’accent est mis sur la comparaison des territorialités du vote au Maroc et en Tunisie, qui sont les deux seuls pays à avoir connu une série d’élections concurrentielles ouvertes après 2013. On mettra en particulier en évidence certaines récurrences des territorialités du vote, notamment l’opposition entre l’urbain et le rural mais aussi entre le Nord et le Sud. On soulignera pourtant que ces récurrences reposent sur des ressorts très différents, contraints par des cadres et des contextes politiques nationaux voire régionaux, notamment du fait d’une rupture en 2011 nettement moins marquée au Maroc qu’en Tunisie. On montrera également que, dans les deux pays, le clivage religieux versus séculier est au cœur des recompositions du champ partisan et que la primauté de la mouvance islamiste est liée à la fois à la faible participation et à la difficulté des forces dites modernistes à s’organiser pour les élections de manière durable.
Ambulance routing in disaster response considering variable patient condition: NSGA-II and MOPSO algorithms
Authors: Rabbani Masoud , Oladzad-Abbasabady Nastaran , Akbarian-Saravi Niloofar
Published: January 2021

The shortage of relief vehicles capacity is a common issue throughout disastrous situations due to the abundance of injured people who need urgent medical aid. Hence, ambulances fleet management is highly important to save as many injured individuals as possible. In this regard, the present paper defines different patient groups based on their needs and characteristics. In order to provide the affected people with proper and timely medical aid, changes in their health status are also considered. A Mixed-integer Linear Programming (MILP) model is proposed to find the best sequence of routes for each ambulance and minimize the latest service completion time (SCT) as well as the number of patients whose condition gets worse because of receiving untimely medical services. Non-dominated Sorting Genetic Algorithm II (NSGA-II) and Multi-Objective Particle Swarm Optimization (MOPSO) are used to find high-quality solutions over a short time. In the end, Lorestan province, Iran, is considered as a case study to assess the model's performance and analyze the sensitivity of solutions with respect to the major parameters, which results in insightful managerial suggestions.
Spectral norm and nuclear norm of a third order tensor
Authors: Qi Liqun , Hu Shenglong , Xu Yanwei
Published: January 2021

The spectral norm and the nuclear norm of a third order tensor play an important role in the tensor completion and recovery problem. We show that the spectral norm of a third order tensor is equal to the square root of the spectral norm of three positive semi-definite biquadratic tensors, and the square roots of the nuclear norms of those three positive semi-definite biquadratic tensors are lower bounds of the nuclear norm of that third order tensor. This provides a way to estimate and to evaluate the spectral norm and the nuclear norm of that third order tensor. Some upper and lower bounds for the spectral norm and nuclear norm of a third order tensor, by spectral radii and nuclear norms of some symmetric matrices, are presented.
Effects of E-Banking Adoption on the Financial Performance of State-Owned Commercial Banks in Bangladesh
Authors: Hossain Md. Imran
Published: January 2021

This study examines the relationship between e-banking adoption and the financial performance of state-owned commercial banks in Bangladesh. The pooled ordinary least square (OLS) estimate was applied to analyze the panel data of the sample banks. The empirical findings reveal that e-banking adoption and implementation has a significant negative impact on banks' profitability in terms of return on assets, return on equity, and net interest margin in the year of adoption. However, the result also shows that e-banking has a significant positive impact on return on assets in the year following adoption.
The Oxymoron of Digitalization
Authors: Osarenkhoe Aihie , Fjellström Daniella
Published: January 2021

How do small and medium-sized enterprises (SMEs) perceive the prerequisites and critical factors of digitalization? The objective of this article is to map SMEs' digital maturity and their views on how to manage the opportunities and challenges brought about by digitalization in order to foster competitiveness in local, regional, national, and international contexts. The study draws on a resource-based perspective, which views the firm as a unique bundle of assets and resources that, if utilized in distinctive ways, can create competitive advantage. The study builds on triadic relations as an interactive learning process that occurs in the interaction between actors as the concept of open innovation postulates. This study was conducted as an interpretative phenomenological analysis (IPA) study of SMEs and actors in innovation system in Gävleborg County in Sweden. It uses a qualitative approach featuring in-depth interviews, workshops, and focus-group interviews. The findings suggest a digital divide between SMEs, with a discrepancy in opportunities to benefit from the digitalization potential among the population studied. The divide manifests itself through economics, usability, and empowerment. Digitalization should not be viewed as merely a technology issue, but as a better way to run a business, as a platform for development and dissemination of knowledge about the critical factors for increased competitiveness that creates competitive values in production with digitalization as a starting point and creates an understanding of the how and what creates competitiveness in each critical factor.
Regressional Analysis of the Patella Parameters of Male Cadaveric Knees Found Among South East Nigerians
Authors: Katchy Amechi Uchenna , Agu Augustine Uchenna , Ikele Ikenna Theophilus , Ikele Chioma Nneka , Ugwu Augustus Uchenna
Published: January 2021

Background:

Total knee replacement (TKR) is a viable option for the management of osteoarthritis, and it has proven to be both effective and successful. Optimization of the patellofemoral joint kinematics is important for surgeons who choose to resurface the patella during TKR. The whole idea is to get the final patellar bone-prosthesis composite thickness to match the original patellar thickness before the surgery.

Aim:

To correlate patella height (PH) and patella width (PW) with patella thickness (PT) as well as build a regression model through which the dimensions can predict the thickness among the native knees of the South East Nigerians.

Materials and Methods:

This is a correlational, nonexperimental, and observational study conducted on 60 knees from 30 male cadavers taken from the anatomy laboratory of the University of Nigeria, Enugu Campus. The PH, PW, and PT were measured by using specific endpoints and the observed data were subjected to statistical correlation analysis.

Results:

PH and PT were strongly positively correlated, r(59) = 0.797, P < 0.001. Results of the multiple linear regression indicated that there was a collective significant effect between the PH, PW, and PT (F(2, 57) = 51.486, P < 0.001, R
2 = 0.644). The individual predictors were examined further and indicated that PH (t = 4.931, P < 0.001) was a significant predictor whereas PW (t = 1.153, P = 0.254) was not a significant predictor in the model. The patella’s predicted thickness is equal to 1.734+0.328 (PH in cm) +0. PT increased 0.328 cm for each centimeter of height. The PH was the only significant predictor of PT.

Conclusion:

This study was able to establish a correlation between the PH, PW, and PT, and it was able to demonstrate PH and PW as predictors of PT among the population of South East Nigeria.
Molecular Docking Analysis of Anti-Severe Acute Respiratory Syndrome-Coronavirus 2 Ligands against Spike Glycoprotein and the 3-Chymotrypsin-Like Protease
Authors: Janabi Ali Hassan Daghir
Published: January 2021

Background:

The severe acute respiratory syndrome-like disease coronavirus disease 2019 (COVID-19) is a disastrous global pandemic with 16,288,490 infected cases and 649,884 deaths. Until now, no effective treatments are found.

Methods:

The virus uses the 3-chymotrypsin-like protease for inducing the activity of the viral polyproteins and the spike (S) glycoprotein for human cell entry through the human angiotensin-converting enzyme 2 receptor. Blocking the active binding sites of these molecules might be beneficial for decreasing the activity of the virus and suppressing the viral entry to the human cells. Here, docking methods were used to identify a group of ligands may perform the blocking operations.

Results:

The results revealed the strongest binding affinities, sorted high to low, for tadalafil (Cialis) (phosphodiesterase type 5 inhibitor, tirofiban (antiplatelet), paraxanthine (central nervous system stimulant), dexamethasone, gentian violet cation (triphenylmethane), salbutamol, and amlodipine (calcium channel blocker).

Conclusion:

These substances may provide vital help for further clinical investigation in fighting against the current global pandemic of the COVID-19.
The Clinical Impact of Capmatinib in the Treatment of Advanced Non–Small Cell Lung Cancer with MET Exon 14 Skipping Mutation or Gene Amplification
Authors: Choi Wonyoung , Park Seog-Yun , Lee Youngjoo , Lim Kun Young , Park Minjoung , Lee Geon Kook , Han Ji-Youn
Published: January 2021

Purpose Capmatinib, an oral MET kinase inhibitor, has demonstrated its efficacy against non–small cell lung cancer (NSCLC) with MET dysregulation. We investigated its clinical impact in advanced NSCLC with MET exon 14 skipping mutation (METex14) or gene amplification.Materials and Methods Patients who participated in the screening of a phase II study of capmatinib for advanced NSCLC were enrolled in this study. MET gene copy number (GCN), protein expression, and METex14 were analyzed and the patients’ clinical outcome were retrospectively reviewed.Results A total of 72 patients were included in this analysis (group A: GCN ≥ 10 or METex14, n=14; group B: others, n=58). Among them, 13 patients were treated with capmatinib (group A, n=8; group B, n=5), and the overall response rate was 50% for group A, and 0% for group B. In all patients, the median overall survival (OS) was 20.2 months (95% confidence interval [CI], 6.9 to not applicable [NA]) for group A, and 11.3 months (95% CI, 8.2 to 20.3) for group B (p=0.457). However, within group A, median OS was 21.5 months (95% CI, 20.8 to NA) for capmatinib-treated, and 7.5 months (95% CI, 3.2 to NA) for capmatinib-untreated patients (p=0.025). Among all capmatinib-untreated patients (n=59), group A showed a trend towards worse OS to group B (median OS, 7.5 months vs. 11.3 months; p=0.123).Conclusion Our data suggest that capmatinib is a new compelling treatment for NSCLC with MET GCN ≥ 10 or METex14 based on the improved survival within these patients.