bluuebunny/crossref_metadata_2025 huggingface dataset:
Influence of Different Synthetic Methods on Morphology and
Luminescent Properties of LaF3:Eu3+ Nanoparticles
Authors: Ladol J.
Published: June 2022

Fluorescent europium ion doped lanthanum fluoride (LaF3:Eu3+) nanoparticles were synthesized using
various methods which includes hydrothermal, co-precipitation and sonochemical method. A series
of experiments were performed to obtain variations in the morphology, structure and optical behaviour
of fabricated products. The optical and structural properties of the fabricated nanoparticles (NPs) were
characterized through scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), energy
dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) spectrometry, and particle
size by dynamic light scattering (DLS). In LaF3 nanoparticles, the existence of europium as dopant
ions was confirmed through energy dispersive X-ray spectroscopy (EDS). The optical properties of
the synthesized nanoparticles were investigated by conducting photoluminescence (PL) studies.
GC-MS Analysis, HPTLC Fingerprint Profile and Antidiabetic
Activity of Methanolic Extract of Perilla frutescens Leaves
Authors: Dixit Arunesh Kumar , Singh Ajay , Farooq S. , Dixit Umesh Kumar , Mehmood Zafar
Published: June 2022

The present study was aimed to investigate the phytochemical constituents of the different extracts of
Perilla frutescens leaves and identification of the compounds by subjecting it to HPTLC and GC-MS
analysis along with antidiabetic property of leaves of P. frutescens. The results from HPTLC finger
print scanned at wavelength 200 nm for methanolic extract of P. frutescens leaf revealed the presence
of seventeen polyvalent phytoconstituents. The HPTLC finger print scanned at wavelength 200 nm
for ethanolic extract of P. frutescens leaves showed fifteen polyvalent phytoconstituents and
corresponding ascending order of Rf values ranged from 0.02 to 0.78 in which highest concentration
of the phytoconstituents was found to be 13.45 % and its corresponding Rf value was found to be 0.64.
α-Amylase inhibition of methanolic extract of P. frutescens leaves was also performed. The standard
(acarbose 0.5-2.0 mg/mL) revealed greatest α-amylase inhibitory action from 43.82 ± 0.12 to 88.14 ±
0.32% with IC50 value worth of 0.575 mg/mL. At a similar focus methanol concentrates of P. frutescens
leaves showed the inhibitory action from 28.21 ± 0.11% to 68.01 ± 0.11%, with an IC50 worth of 1.15
mg/mL. The methanolic extract of P. frutescens leaves exhibited inhibition of α-amylase enzyme
proved the antidiabetic potentiality of P. frutescens leaves.
De «Metahistoria» a «El pasado práctico»: retórica, narrativa e ideología en Hayden White
Authors: Pérez Baquero Rafael
Published: June 2022

El objetivo del artículo es presentar una interpretación diacrónica del pensamiento de Hayden White, resaltando sus líneas directrices y las diferentes discontinuidades por las que transita su obra. Vamos a defender que los cambios que experimenta su teoría deben interpretarse tomando como marco las variaciones de las relaciones entre la dimensión retórica y la ético-política, ya que la primera resulta prioritaria al inicio de su obra y la segunda al final. A su vez, trataremos de justificar que estos cambios son una consecuencia de las alteraciones en su teoría del lenguaje. Nos referimos concretamente a modificaciones derivadas del énfasis en el carácter performativo de la función poética del discurso histórico.
Edipo rey, el rey David y el problema del reconocimiento
Authors: Gómez Sánchez Carlos
Published: June 2022

1) La obra Edipo rey, de Sófocles, es tomada como paradigma del reconocimiento de sí por sí mismo (anagnórisis), aunque 2) podemos encontrar en la cultura judía pasajes de estructura en cierto modo similar, tal como se examinan a propósito del rey David. 3) De ahí pasamos a considerar el reconocimiento mutuo (Anerkennung) y la lucha por el reconocimiento de la mano de Hegel, algunos de cuyos límites se abordan. 4) Finalmente, se apuntan algunos otros importantes sentidos del término reconocimiento.
La formación del sentido histórico
Authors: Padilla Juan
Published: June 2022

El objetivo del artículo es narrar cómo se ha ido formando en Occidente el sentido histórico, tal como hoy lo conocemos; es decir, el sentido en virtud del cual percibimos en todo lo que nos rodea, como una cuarta dimensión, su pasado, su origen, la historia por la que ha llegado a ser lo que es. La adquisición de este sentido ha sido un proceso lento, laborioso y accidentado, resultado de múltiples aportaciones y enriquecimientos. Como todos los demás sentidos, el histórico es menester educarlo y cultivarlo, porque lo que con dificultad se ha logrado puede fácilmente malograrse.
Colonialidad judicial, pluralismo jurídico y ciudadanía republicana
Authors: Polo Blanco Jorge
Published: June 2022

El reconocimiento constitucional de ciertos derechos colectivos de los pueblos originarios, efectuado en algunas Repúblicas hispanoamericanas que han avanzado en procesos constituyentes hacia un Estado de carácter plurinacional, multiétnico e intercultural, ha conseguido quebrar hasta cierto punto aquella cultura jurídica hegemónica que dominó con su carácter monista durante décadas o, mejor dicho, durante siglos. La legitimación de un derecho consuetudinario indígena, poseedor de una jurisdicción especial y autónoma, esto es, la construcción de un marco dentro del cual estas comunidades tengan «derecho al propio derecho», constituye sin duda un principio importante para romper la persistencia secular de aquella colonialidad jurídica que, primero desde una matriz criolla y después desde una matriz mestiza, negaba toda autonomía judicial a las distintas nacionalidades indígenas. Pero este nuevo horizonte, si bien representa un proyecto eminentemente decolonial en muchos aspectos, no está exento de problemáticas contradicciones. Porque un escenario de radical pluralismo jurídico quebrantaría la posibilidad de establecer un marco común de ciudadanía, y es éste un nudo de conflicto importantísimo.
¿Qué es el arte y qué constituye el valor artístico?
Authors: Tena Sánchez Jordi , Centellas Indira
Published: June 2022

El presente artículo se basa en la teoría de la creatividad artística de Jon Elster para tratar de ofrecer un esbozo de definición del concepto de arte, así como las bases para una teoría del valor artístico. Se sostiene que una obra de arte es una creación humana realizada con la intención de provocar una experiencia estética, así como que el principal valor de una obra de arte radica en su capacidad para producir emociones estéticas y no estéticas. Dicha concepción pone en dificultades a algunas importantes formas de arte contemporáneo, como el arte conceptual.
Yo, absoluto y libertad: perspectivas sobre la filosofía de Fichte
Authors: Gaudio Mariano Lucas
Published: June 2022

Se trata de una reseña amplia y que reconstruye la estructura, el desarrollo y cada uno de los momentos del libro de J. Rivera de Rosales, Fichte. La libertad es el fundamento del conocimiento y de la moral, Barcelona, RBA, 2015, 159 páginas.
Improving High-Temperature Cycle Stability and Rate Performance of LiNi0.82Co0.11Mn0.07O2 Cathode Materials Using Hydrogen Peroxide Solution Washing System
Authors: Lee Seon-Jin , Jang Hyun-Ju , Son Jong-Tae
Published: June 2022

In this study, for the removal of residual lithium (Li2CO3,LiOH) from a nickel-rich cathode material surface, LiNi0.82Co0.11Mn0.07O2 cathode materials were washed with an aqueous solution of hydrogen peroxide (H2O2).H2O2 ( pH6.04), a weak acid, can easily decompose Li2CO3 and LiOH as an oxidizing agent. On titration of residual lithium, the amounts of LiOH and Li2CO3 are 390 and 605ppm,25 - and 47 -times lower, after H2O2 washing compared to 10,296 and 28,440ppm, respectively, in case of cathode materials before washing. On DSC thermal analysis, the peak temperature and calorific value of the cathode material washed with H2O2 were 245.5∘C and 602.0 J/g, respectively, whereas the bare case was 208.6∘C and 1,071 J/g, respectively. Therefore, H2O2-washed LiNi0.82Co0.11Mn0.07O2 cathode materials had higher capacity heat retention after 100 cycles at 55∘C(85.6% at 0.5C) than the bare LiNi0.82Co0.11Mn0.07O2 cathode materials (78.6% at 0.5C).
Proposing Indonesia History Teaching that Transcends Political Ideologies
Authors: Nasution Nasution
Published: June 2022

The teaching of Indonesian history, in many cases in school, remains dominated by history of politics and political indoctrination, underscoring the need for critical and holistic learning. This paper aims to analyze the Indonesian National History textbooks used in schools, and to examine the possibility of teaching Indonesian history that goes beyond political indoctrination and is holistic. The method used in this paper is the analysis of an Indonesian National History textbooks that have been used as the main textbook for the history subject in schools. The teaching of Indonesian history in schools is still dominated by a single version of historical events. The narratives of Indonesian history lessons often ignore different perspectives, or other aspects of historical events that are of interest. Indonesian history does not only belong to the winners. A holistic approach to the teaching of history is expected to help enrich students' knowledge of past events and provide a clearer picture of the history of a multicultural society. For example, a discussion of the Benteng economic policy should not only revolve around the points of view of one ethnic group and ignore the suffering of others. In other cases, discussions on the PKI revolt often neglect human rights aspects, et cetera. Not only should students gain knowledge about past events based on the dominant interpretations, but are also exposed to the narratives of marginalized people. Not only that, history lessons should also cover aspects that include arts, literature, painting, music and other cultural products. In the end, a holistic approach enriches students’ understanding of a historical event, foster a positive attitude and inspire them to learn about stories that have been under-heard or deliberately marginalized.
CFD Comparison of multiphase models in the pool boiling state
Authors: Enjadat Suleiman MJ.
Published: June 2022

With the development of simulation technology and programs, it became necessary to study the models that control equations’ solutions and influence the results. The models having control over solving equations of multiple phases and materials are investigated. They include (Volume of Fluid (VOF), mixture, Eulerian) controlling the governing equations. The study was conducted depending on the boiling point of the water. The activation of these three models is carried out to find out which one is better for solving the issue of boiling compared to previous numerical and empirical research with the study of the surface tension coefficient that affects the behavior of phases in a contaminated manner. The best model explored in the case of boiling is VOF for the merging of steam bubbles, the velocity of flows 0.257 m/s for both water and steam, and the phase transition. The effectiveness of the VOF model is mirrored by higher efficiency and accuracy of the solution with velocity 0.257 m/s and volume fraction 0.9997. The activation of the surface tension factor 0.072 property simulates the real conditions surrounding the materials used in boiling, but it significantly increases the turbulence and distribution of gas bubbles.
Structural behavior of tree-like steel columns subjected to combined axial and lateral loads
Authors: Dekhn Rabab C. , Shadhan Khalid K.
Published: June 2022

Few studies have been conducted on the structural behavior of steel columns with branches that are called tree-like columns. These kinds of columns have been used in many structures around the world. The purpose of this study is to investigate the failure load, vertical and lateral displacement, and failure mode of tree-like columns subjected to a combination of axial and lateral loading. The ratio of lateral load to axial load has been selected as the design variable. A finite element model with one branching level and two branches within the level was first developed using ABAQUS/CAE 2017 software. The model was verified with experimental results. The axial failure load and axial and lateral displacement were determined and compared for different loading ratios. The failure mode was also studied for different loading conditions. The results showed that the axial failure load decreased significantly by 54, 42, and 28% when lateral/axial loading ratio increased by 20, 40, and 60%, respectively. There was no significant decrease when lateral/axial loading ratio was more than 60%, while axial and lateral displacements increased significantly by 24% for each 20% increase in the loading ratio. Local buckling was observed as a failure mode when only gravity load is applied, while combined load resulted in lateral buckling.
A 50 Year old Female with a Large Multi nodular goitre and Kyphoscoliosis Posted for Total Thyroidectomy - Perioperative Challenges
Authors: Salaria Misbah , Mehta Nandita
Published: June 2022

Thyroidectomy is reported the most common endocrine surgical procedure being carried out throughout the world. The challenges faced by an anesthesiologist during thyroid procedures are never ending, scenarios being ranging at any stage, be it preoperative, intra operative or post operative. Thyroid surgery mandates optimal preparation on one hand, while enlarged gland further adds to the anesthetic challenges with an anticipated difficult airway. Various other cardiac comorbidities add on to the difficulty. Thyroid storm in an inadequately prepared patient can occur due to various causes adding the burden on to the anesthesiologist. Complications such as hemorrhage, laryngeal edema, nerve palsies, tracheomalacia, tetany, pneumothorax etc. that develop postoperatively pose a challenge in the post operative recovery area. Our present review aims at a detailed analysis of the risks faced and challenges encountered during a successful administration of anesthesia in a 50 year old female Mrs. Kiran Sharma with a progressively increasing large multi nodular goiter posted for total thyroidectomy. Keywords: Difficult airway; thyroidectomy; tracheomalacia; multi nodular goiter;
Spinal Cord Stimulation for Refractory Angina Pectoris: A Narrative Review
Authors: Valchanov Kamen , Misra Abhi
Published: June 2022

Refractory Anginal Pectoris is a condition defined as persistent anginal pain despite best medical treatment. It is a consequence of coronary artery disease which has been treated by revascularization and pharmacological means. Spinal cord simulation is an established and evidence supported treatment for this condition with significant patient benefits. In this review we present the data available for use of the technique as a palliative tool for refractory angina treatment.
Effect of examination stress on Autonomic functions, Eating behavior and Quality of life in Dental students with Type D personality
Authors: Safiya Aneesa , Sai Sailesh Kumar , P Amarnath , Swathi Movva , Chandana Siri , Sai Vivek Krovvidi , R Sudhakar Reddy , D Suseelamma
Published: June 2022

Dental education was reported to be stressful and higher levels of stress were reported in dental students when compared with the general population of same age groups. Individuals with higher levels of negative affectivity (more negative feelings) and social inhibition (those do not share the emotions with others) are labeled as Type D personality. The present study was undertaken to observe the effect of examination stress on autonomic functions, eating behavior and quality of life in dental students with type D personality. 64 apparently healthy students belonging to the first year of the BDS course who were willing to participate voluntarily, were included in the study. Based on the scores of DS 14 of the questionnaires, they were grouped into Type-D and Non-Type D. After grouping them, rest of the data was collected using standard methods mentioned in the literature. Data was collected during pre examination period that is 48 hours before the practical examinations. There was no significant difference in the demographic data of type D and non type D individuals. Perceived stress score was significantly high in type D personalities when compared with non-type D personalities (P< 0.05). Systolic BP (P< 0.05), Diastolic BP (P< 0.001) and heart rate (P< 0.001) was significantly higher in type D personalities when compared with non-type D personalities. EAT-26 scores were not significantly different among type D and non type D individuals. Physical health score, psychological health, social relationships and environmental scores were lower in type D personalities when compared with non-type D personalities. However, the difference was not statistically significant. In conclusion, there was a significant higher level of stress, impaired autonomic function in individuals with type D personality during pre examination period. Eating behavior and quality of life was not significantly different among type D and non type D personalities. We recommend further detailed, multi centre studies to understand and to develop effective coping mechanisms for management of type D personalities in general. Key words: Examination stress; type D personality; Dental students; Quality of life
Further Developments on the (EG) Exponential-MIR Class of Distributions
Authors: Ampadu Clement Boateng
Published: June 2022

The Modified Inverse Rayleigh (MIR) distribution appeared in [Khan, M. S. (2014).Modified inverse Rayleigh distribution. International Journal of Computer Applications, 87(13):28–33] who got some theoretical properties of this distribution, and in[Nasiru, S., Mwita, P. N. and Ngesa, O. (2017). Exponentiated Generalized Exponential Dagum Distribution. Journal of King Saud University- Science, In Press] they introduced the (EG) Exponential-X class of distributions and obtained some theoretical properties with application. By assuming the random variable X follows the MIR distribution, some theoretical properties with application of the (EG) Exponential-MIR Class of distributions appeared in [Nasiru, S., Mwita, P. N. and Ngesa, O. (2018). Discussion on Generalized Modified Inverse Rayleigh Distribution. Applied Mathematics and Information Sciences, 12(1):113-124]. In the present paper we propose some extensions of the (EG) Exponential-MIR class of distributions. The (EG) Exponential- MIR class of distributions is part of Chapter 5 [Nasiru, S. (2018). A New Generalization of Transformed-Transformer Family of Distributions. Doctor of Philosophy thesis in Mathematics (Statistics Option). Pan African University, Institute for Basic Sciences, Technology and Innovation, Kenya], where the naming convention “NEGMIR” is used Keywords: T-X (W) family of distributions; Exponentiated Generalized distributions; Modified Inverse Rayleigh distribution; biological data; health data
Bactericidal potential of Agrochemicals against bacterial leaf spot pathogen Xanthomonas campestris pv. Vesicatoria of tomato prevalent in Nashik region, Maharashtra and ability of bacteria to form pesticide resistant mutant
Authors: T S Ajayasree , Borkar S G , Barhate B G
Published: June 2022

Selection of suitable agrochemicals/pesticides plays an important role in the management of bacterial plant pathogen prevalent in a given area, may be due to the presence of pesticide resistance available in the pathogen. In this scenario, the assessment of bactericidal potential of agrochemical to be used in the management of bacterial plant pathogen is very necessary. To manage the bacterial leaf spot and blight pathogen Xanthomonas campestris pv. Vesicatoria on tomato prevalent in Nashik region, the bactericidal potential of various agrochemicals were assayed. The bacterial potential of antibiotic Streptomycin sulphate, and Streptocycline; the bactericide Bactericin-100, and the Bordeaux mixture; the copper fungicide Copper-ox chloride and the dithiocarbamate group of fungicide Mancozeb; the combination of Copper ox chloride + Streptocycline were against the tomato leaf spot and blight pathogen Xanthomonas campestris pv. Vesicatoria under in vitro condition. The minimum inhibitory concentration of these agrochemicals against Xanthomonas campestris pv. Vesicatoria varies indicating the variable bactericidal potential of these agrochemicals against the said bacterium prevalent in Nashik areas. The bacterial population of Xanthomonas campestris pv. Vesicatoria was resistant to the antibiotic Terramycin, Streptomycin sulphate and to the fungicide Copper ox chloride, Mancozeb and a combination of Copper ox chloride + Streptomycin sulphate and induced the pesticide resistant mutant in the bacterium with various mutation frequencies. The mutation rate for Terramycin and Streptomycin sulphate was 3.5 x 10-4 and 2 x 10-4 respectively, whereas, for Dithane Z-78, Mancozeb and a combination of Copper ox chloride+ Streptomycin sulphate was 2.6 x 10-4, 8 x 10-5 and 5 x 10-5.respectively. The agrochemicals which were completely inhibitory to the bacterium and did not allow the formation of antibiotic or antibiotic + fungicide resistance mutant were Streptocycline, Streptocycline+ Copper ox chloride and Streptocycline + Bordeaux mixture. Keywords: Antibiotics; Bactericides; Fungicides; Mutant
A practical approach to unveiling auto-catalytic cleavages mediated by Mxe GyrA intein and improving the production of authentic bFGF
Authors: Wang Hao , H Xiuhua , Sivakumar T , Nelson Lai Cheuk Yin , Ng K L , Lam C C , R Wong W K
Published: June 2022

A controllable cleavage activity of inteins to release target proteins from affinity tags is an attractive approach for the production of heterologous proteins. Expression of CellBD-GyrA-bfgf (CGF), a fusion precursor comprising the cellulose binding domain (CellBD) of an endoglucanase (Eng) encoded by the cenA gene of Cellulomonas fimi at the N-terminus, Mxe GyrA intein (GyrA) in the middle, and human basic fibroblast growth factor (bfgf) at the C-terminus, resulted in incomplete auto-catalytic cleavages and a partial release of free bFGF in the cytosol of Escherichia coli. Amino acid substitutions involving Cys1Ala (C1A) and His197Gln (H197Q) performed simultaneously at both termini of GyrA on CellBD-GyrA-bfgf, thus forming the 49-kDa full-length CGF (H197Q; C1A) mutant precursor (49-kDa MP), were found to exhibit an inhibitory effect on the cleavage detected between CellBD and GyrA, thereby enhancing the reservation of intact 49- kDa MP, which was shown to bind well to Avicel. Sequencing analysis showed that 49-kDa MP underwent complex auto-processing activities involving self-cleavages, proteolysis and fusion of degraded fragments to give rise to a variety of smaller intermediates. One such intermediate, 39-kDa (SI), was also found to be able to bind to Avicel. Free bFGF was effectively cleaved from 49-kDa MP and 39-kDa SI bound on Avicel at pH 8.5 or in the presence of succinic acid. Released bFGF was substantiated to possess the authentic structure and potent bioactivity. The findings may pave way for the development of a facile scalable approach for enhancing production of a heterologous protein. Keywords: Mxe GyrA Intein; Site-Specific Mutagenesis; Cellulose Binding Domain; Avicel; bFGF ; in vitro Cleavages; pH 8.5 ; Succinic Acid
Quantitative Structure–Activity Relationship (QSAR) Studies of Some Glutamine Analogues for Possible Anticancer Activity
Authors: Elidrissia B , Ousaa A , Ajana MA , Lakhlifi T , Bouachrine M
Published: June 2022

A Quantitative Structure–Activity Relationship (QSAR) study was performed to predict an anticancer activity in tumor cells of thirtysix 5-N-substituted-2-(substituted benzenesulphonyl) glutamine compounds using the electronic and topologic descriptors computed respectively, with ACD/ChemSketch and Gaussian 03W programs. The structures of all 36 compounds were optimized using the hybrid Density Functional Theory (DFT) at the B3LYP/6-31G(d) level of theory. In both approaches, 30 compounds were assigned as the training set and the rest as the test set. These compounds were analyzed by the Principal Components Analysis (PCA) method, a descendant Multiple Linear Regression (MLR), Multiple Nonlinear Regression (MNLR) analyses and an Artificial Neural Network (ANN). The robustness of the obtained models was assessed by leave-manyout cross-validation, and external validation through a test set. This study shows that the ANN has served marginally better to predict antitumor activity when compared with the results given by predictions made with MLR and MNLR. Keywords: DFT; QSAR; Tumor cells; Artificial Neural Network; Cross Validation;
Use of Layered Double Hydroxides to Create New Environmental Technologies
Authors: Butenko Eleonora
Published: June 2022

This review surveys recent advances in the applications of layered double hydroxides [LDHs] in sorption processes. By virtue of the flexible tunability and uniform distribution of metal cations in the brucite-like layers and the facile exchangeability of intercalated anions, LDHs-both as directly prepared or after thermal treatment or rehydrated have found many applications as stable and recyclable sorbents for environmental protection in industrial regions. This paper presents data on the structure and properties of LDHs, the production of sorbents with fixed and labile dimensions of interplanar spaces. Technologies for the removal of organic and inorganic substances using LDHs sorbents have been developed. Keywords: layered double hydroxides; sorbent; environmental protection;
A Survey on the Menace of Lingzhi Mushrooms on Trees in Shell Residential Area, Port Harcourt
Authors: Ozumba Chinyere Ozumba Bertram , Ilondu Ebele
Published: June 2022

Observations through routine tree surveys and reports by estate managers and residents show an increasing rate of sudden fall of healthy looking trees recently in Shell Petroleum Development Company of Nigeria Residential Area (SPDC RA), thus creating a high potential risk to lives and facility. An earlier survey had suggested that a weakening of the root system due to the presence of mushroom species of a cosmopolitan basidiomycete in the genus Ganoderma may be responsible for the tree falls. Consequently, a team was constituted for an emergency tree hazard hunt exercise using the approved criteria for tree cutting as terms of reference. During the tree hunt exercise, a survey was undertaken with the aim of identifying the mushroom species involved and type of disease, disease symptoms, method of infection/spread, any diagnostic tools for the disease as well as curative and preventive measures for the management of the disease in order to proffer suitable recommendations. Forty-one (41) out of a total of two hundred and seventy-one (271) trees surveyed (15%) were impacted by the mushroom. Disease symptoms include yellowing, necrosis, wilting of the palms fronds and development of a basidiocarp at the tree base. The fungus is soil-borne, spreading from root to root and by migration of airborne basidiospores from basidiocarp. It overwinters in dead woody debris and tree stumps. Some diagnostic tools have been developed both in the laboratory and field for the diagnosis of this disease which include; Calorimetric method using Ethylenediamine-tetraacetic acid, Ganoderma selective media, use of Polyclinal Antibodies (PAbs) and Polymerase Chain Reaction (PCR), Remote Sensing System, application of colour indices using multispectral and thermal camera as well as tomography instrument. The use of trench system, soil mounding, fungicidal treatment and replanting techniques have great potentials in the management of this disease. Periodic checks, routine removal of basidiocarps, geo-referencing and superimposing the impacted trees positions on an existing RA Base map and replanting the cut trees to re-vegetate the environment in phases with seedlings around the camp are recommended. Proper taxonomic study on the Ganoderma species diversity in the RA environment is necessary. Keywords: Shell Petroleum Development Company Residential Area (SPDC RA); Basidiomycete; Basidiocarp; Calorimetric method; Polyclinal Antibodies (PAbs); Polymerase Chain Reaction (PCR); Remote Sensing; Taxonomic study; etc.;
Perchlorate: The Two-Decade Journey to a Proposed Rule
Authors: B. Goldhaber Susan
Published: June 2022

Perchlorate, a manufactured and naturally occurring chemical, was first detected in drinking water supplies in California in the 1980s. In the 1990s, perchlorate contamination (in the parts-per-billion range) was detected in drinking water supplies across the U.S. EPA began evaluating perchlorate for regulation in drinking water in 1998 and has spent 21 years issuing various proposals and findings on perchlorate, with a proposed (not final) drinking water regulation issued on June 26, 2019. The lack of a drinking water standard has had ramifications, including lack of trust in public drinking water resulting in economic hardship, particularly among Department of Defense personnel and other low-wealth communities, the states setting a patchwork of their own regulations on perchlorate, and lack of monitoring or clean-up of perchlorate in Department of Defense water systems. The reasons for EPA’s two-decade rulemaking process for perchlorate include the process EPA uses to determine regulatory feasibility under the Safe Drinking Water Act and the multi-year scientific review process. Key recommendations for shortening the process include amending the Safe Drinking Water Act and increasing transparency of the rulemaking process. List of Abbreviations: BMDL- Benchmark Dose Level; CCL- Contaminant Candidate List; DOD- Department of Defense; DWEL- Drinking Water Equivalent Level; EPA- Environmental Protection Agency; GAO- General Accountability Office; HRL- Health Reference Level; IRIS- Integrated Risk Information System; LOAEL- Lowest-Observed-Adverse-Effect Level; MCL- Maximum Contaminant Level; MCLG- Maximum Contaminant Level Goal; NOAEL- No-Observed-Adverse-Effect Level; NRC- National Research Council; RfD- Reference Dose; RSC- Relative Source Contribution; SAB-Science Advisory Board; SDWA- Safe Drinking Water Act
Freshwater mollusk species of Itupararanga Reservoir, São Paulo, Brazil
Authors: Vendramini Bianca Medeiros , Pintor de Arruda Eliane
Published: June 2022

The Itupararanga Reservoir, located within an environmental protection area, is an important water source that supplies four cities in the state of São Paulo. Samples of mollusks were collected in the reservoir to create an inventory of species and identify possible bioindicators. Thirteen species were identified: Diplodon caipira (Ihering, 1893), Anodontites trapesialis (Lamarck, 1819), Pisidium globulus Clessin, 1888, Pomacea figulina (Spix in Wagner, 1827), Omalonyx convexus (Heynemann, 1868), Drepanotrema cimex (Moricand, 1839), Biomphalaria tenagophila (d’Orbigny, 1835), Uncancylus concentricus (d’Orbigny, 1835), Stenophysa marmorata (Guilding, 1828), and Pseudosuccinea columella (Say, 1817), which are native to Brazil, and Corbicula fluminea (O.F. Müller, 1774), Melanoides tuberculata (O.F. Müller, 1774), and Physa acuta Draparnaud, 1805, which are invasive species. This is the first inventory of mollusks in this area, and this initial study will allow complementary research into populational ecology. Additionally, this inventory contributes records that clarify the areas of occurrence of the reported species.
Ardanaz-Iñarga, Naiara (coord.), Etniker. Cincuenta años de investigación etnográfica en Vasconia, Pamplona, Etniker Euskalerria, 2021, 237p. ISBN: 978-84-09-35513-6. 15,00€
Authors: Usunáriz Jesús-M.
Published: June 2022

Book Review
Study on impact strength and effect of accelerated weather testing on some properties of polyoxymethylene/silica nanocomposites
Authors: Mai Tran Thi , Trang Nguyen Thi Thu , Chinh Nguyen Thuy , Le Dang Thi Thanh , Hang Ha Van , Hoang Thai
Published: June 2022

The impact strength, some properties and morphology of nanocomposites based on polyoxymethylene (POM) and nanosilica (NS) with different content before and after accelerated weather testing are discussed in this paper. The impact strength of all POM/NS nanocomposite samples are larger than that of POM. Carbonyl index (CI) for nanocomposites are changed after testing responding to the increase of C=O groups content. The results of tensile properties indicate that samples are decomposed by ultraviolet (UV) radiation and photo-oxidation degradation of POM.
Keine Mindestexpositionszeit für Meniskusschäden der Profifußballer
Authors: Holtstraeter Reinhard
Published: June 2022

Meniskusschäden können nach mehrjährigen andauernden oder häufig wiederkehrenden, die Kniegelenke überdurchschnittlich belastenden Tätigkeiten als Berufskrankheit (BK) Nr. 2102 anerkannt werden. Eine mehrjährige Einwirkungsdauer kann frühestens nach Ausübung der belastenden Tätigkeit von mindestens zwei Jahren angenommen werden. Für diese Mindestexpositionsdauer wird üblicherweise der Vollarbeiterrichtwert von durchschnittlich 1600 Stunden pro Jahr zugrunde gelegt. Für die Erfüllung der arbeitstechnischen Voraussetzungen der BK 2102 von Personen, die eine unter vollschichtige Tätigkeit ausüben, wird daher für einige Berufsgruppen der Nachweis einer Einwirkung von mindestens 3200 Stunden gefordert. Für Profifußballer1 lehnt der Senat – wie zuvor schon das Landessozialgericht Baden-Württemberg im Urteil vom 19.03.2021 – L 8 U 1828/19 für Profihandballer – eine solche Mindestbelastungszeit ab.
Преподавание в кризисе
Authors: Радаев Вадим
Published: June 2022

С приходом в университет новых поколений студентов преподавание оказалось в серьезном кризисе, который лишь усугубился в период пандемии коронавируса. Что именно пошло не так? В книге разбираются многочисленные основания возникшего кризисного состояния и формулируются общие принципы, на которые могли бы опереться нынешние преподаватели. Автором также предлагается ряд практических советов из накопленного личного опыта и обсуждается вопрос о том, зачем вообще нужно преподавать.
Studying the Effect of Temperature on the Tensile Strength of an Intravascular Catheter Using a Degradation Model
Authors:   , Esqueda Hernández Kimberly
Published: June 2022

The accelerated aging process is incorporated into the design and development of intravascular catheters to assess their reliability assuring that this medical device is safe and effective for the intended use during their shelf life. The accelerated aging process is based on a common approach that assumes that the rate of aging increases by a factor of 2^(∆T/10), where ∆T is the temperature increment. However, with the life data obtained from this empirical method is difficult to do inferences about reliability. This paper presents an accelerated destructive degradation test using thermal stress to obtain degradation data directly relates reliability to critical performance characteristic, which is the tensile strength in the intravascular catheter tip considered as a critical concern in patients’ safety. The degradation data model is given by a stochastic Wiener process with the drift parameter being represented as Arrhenius function. The parameters of the Wiener process and Arrhenius function are estimated using maximum likelihood; these parameters are used to estimate the first-passage time (time to failure) distribution when the intravascular catheters degradation path reaches a tensile strength critical value in each thermal stress level. Based on this, a complete product reliability assessment is performed and presented.
Vibration analysis during AZ31 magnesium alloy milling
with the use of different toolholder types
Authors: Korpysa Jarosław , Zagórski Ireneusz
Published: June 2022

Machining vibrations are an important issue as they occur in all types of machining processes. Due to its negative impact on machining results, this phenomenon is undesirable,
and so there have been continuous efforts to find solutions that will minimise it, and thus
improve the stability and safety of the machining process. The paper attempts to determine
the impact of toolholder type and cutting condition on the vibrations generated while milling
an AZ31 magnesium alloy. The tests were performed using the three most common types of
toolholders: ER, Shrink Fit and hydraulic. The vibration displacement and acceleration signals were analysed based on parameters such as Peak-to-Peak, Peak, and Root Mean Square.
Composite Multiscale Entropy was also applied to check the stability of cutting processes
and define the level of signal irregularity. To determine the frequencies of vibrations and to
detect chatter vibrations Fast Fourier Transform was performed. This provides information
on the stability and enables vibrations to be minimized by avoiding unfavourable cutting
conditions.
The Borders of the Law: Legal Fictions, Elusive Borders, Migrants’ Rights
Authors: Molinari Caterina
Published: June 2022

Bordering processes take place through different means and are carried out by different actors. Laws and regulatory activities have a prominent place among border-drawing instruments: Their capacity to mobilise actors, allocate funds, and determine procedures and remedies make them a formidable and multifaceted bordering tool. It is therefore not surprising to notice that EU institutions have heavily relied on regulatory tools when the need to resort to new bordering processes emerged in the aftermath of the so-called migration crisis. This article delves into a particular (re-)bordering process emerging from the legislative proposals attached to the Commission’s 2020 New Pact on Migration and Asylum: the attempt to uncouple the duty to fully respect and protect fundamental rights from the reality of migrants’ presence on national territory. This objective is pursued by the proposed legislative package through non-entry fictions, capable of untangling the legal notion of “border” from its physical reality for the purpose of immigration law (only). The analysis of the relevant provisions provides the reader with a number of insights into the transformation of EU borders. First, borders (as defined by the law) are subject to a peculiar legal regime. Secondly, the legal notion of borders is increasingly independent of its physical/geographical correspondence. Thirdly, legal border lines are not linked to any place on the ground, but rather follow irregular migrants as they move, confining them to areas of less law, no matter their location.
Spacs: ¿Es oro todo lo que reluce?
Authors: Fernández Torres Isabel
Published: June 2022

Las SPAC existen desde hace décadas en EE.UU. y suelen ser el último recurso para las pequeñas empresas que, de otro modo, habrían tenido problemas para conseguir dinero en el mercado abierto. Pero recientemente se han vuelto más frecuentes debido a la extrema volatilidad del mercado causada, en parte, por la pandemia mundial. Las SPAC son una de las tendencias más candentes en Wall Street y se han convertido en un tema de gran interés en la actualidad en Europa, hasta el punto de que se ha lanzado una consulta pública en el Reino Unido para introducir nuevas normas para las empresas cotizadas, mientras que en España se ha presentado una modificación de la Ley de Sociedades de Capital el pasado 5 de mayo de 2021. Algunos comentarios recientes han hecho referencia a una burbuja de SPAC e incluso a un boom de SPAC. Sin embargo, algunos de esos comentarios se centran sólo en algunas de las operaciones exitosas, evitando algunas características clave de la complejidad, los riesgos y los costes ocultos de las SPACs.
La buena administración en la tradición jurídica española
Authors: Rubio Hernández-Sampelayo Gonzalo
Published: June 2022

El presente trabajo pretende acreditar que la buena administración es una realidad jurídica ínsita en la tradición española desde la construcción de nuestro derecho administrativo moderno en la década de los años 50 del siglo pasado. Asimismo, se analiza la conexión de nuestra tradición con sus principales proyecciones de futuro influidas por el Derecho europeo.
Naturaleza y alcance de la negociación colectiva extraestatutaria: crónica jurisprudencial
Authors: Menéndez Sebastián Paz , García Torres Alba
Published: June 2022

Sin resumen
Discurso con motivo de la celebración de San Raimundo de Peñafort
Authors: Fernández Teruelo Javier Gustavo
Published: June 2022

Sin resumen
El coordinador de parentalidad: una figura idónea en la gestión de conflictos familiares
Authors: Baides Noriega Javier
Published: June 2022

Un problema importante en procesos de separación o divorcio cuando hay implicados hijos menores de edad, es la existencia de una elevada conflictividad que perjudica los intereses y el desarrollo de los menores. Para paliar esta cuestión surge el coordinador de parentalidad. Se trata de un profesional que actuará como auxiliar del juez y cuya principal función es asumir una tarea pedagógica con los progenitores y protectora con los menores. Dentro de nuestra legislación nacional no es posible encontrar regulación al respecto, sin embargo, cada vez es más frecuente encontrarnos con su intervención en los distintos juzgados de familia del territorio nacional.
Análisis crítico del procedimiento de reforma constitucional en España
Authors: Grana Chevaux Nerea
Published: June 2022

Estudio del procedimiento de reforma constitucional en España, observando si este cumple o no su función de permitir la adaptación de la Constitución a las circunstancias sociales y desvelándose aquellas cuestiones procedimentales que pueden estar haciendo peligrar el cumplimiento de dicha función y aquellos obstáculos con los que nos encontramos a la hora de ponerla en marcha.
Analisis Penguasaan Sintaksis Siswa Kelas IV pada Karangan Deskriptif Realistis di SD Gugus VI Kecamatan Kepanjen
Authors: Dzikria Amilatus Nurul , Rini Titis Angga , Cholifah Puri Selfi
Published: June 2022

Abstract: Students' mastery of syntax is very diverse. This causes the teacher not to know clearly about the ownership of these assets in terms of phrase syntax and sentence syntax. This study aims to describe the syntactic description of the syntax of phrases and syntax of sentences. The approach used in this research is descriptive quantitative. The population in this study were all elementary school students in cluster 6 in Kepanjen District as many as 339 students, while the research sample was 54 students. Data collection techniques used are tests and documentation. The results showed that the students' syntax in terms of sentences and sentences was good. Suggestions given by researchers are school and teacher learning to carry out optimally, especially regarding syntax.

Abstrak: Penguasaan siswa mengenai sintaksis sangat beragam. Hal ini menyebabkan guru tidak mengetahui secara jelas mengenai penguasaan sintaksis siswa dalam segi sintaksis frasa maupun sintaksis kalimat. Penelitian ini bertujuan untuk mendeskripsikan penguasaan sintaksis siswa dari segi sintaksis frasa dan sintaksis kalimat. Pendekatan yang digunakan dalam penelitian ini yaitu kuantitatif deskriptif. Populasi dalam penelitian ini yaitu seluruh siswa SD gugus 6 di Kecamatan Kepanjen sebanyak 339 siswa, sedangkan sampel penelitian sebanyak 54 siswa. Teknik pengumpulan data yang digunakan yaitu tes dan dokumentasi. Hasil penelitian menunjukkan bahwa penguasaan sintaksis siswa dari segi frasa dan kalimat sudah baik. Saran yang diberikan oleh peneliti yaitu hendaknya sekolah dan guru bekerjasama untuk melaksanakan pembelajaran secara optimal khususnya mengenai sintaksis.
Brand Making Process in B2B Companies (Case Study: Tam Iran Khodro Company)
Authors: Nasr Mahmoud Samiei , Mahmoudzadeh Mohsen , Mousavi Shahab , Alikhani Elham Agha
Published: June 2022

In this research, we have tried to analyze the brand-making process of Tam Iran Khodro Company from the viewpoint of the employees who are the most important factor in the brand-making of a company. The purpose of this research is to know whether such companies not directly connected with the final customers will try to be changed into a valid brand from a mere trade name. Also, another purpose of this stage is to provide a general and up-to-date picture of internal company-based perceptions of the brand, so that the process will be started based on the business realities. This research was carried out by holding the training courses for all employees in regards to the upcoming challenges at the time of entering the brand-making management and distributing questionnaires which are the most important instruments of this research. The present research is a field study research from the viewpoint of the manner of gathering information, a survey study research from the viewpoint of the manner of performance, and developmental & applied research from the viewpoint of the purpose. The statistical universe of this research consists of personnel of Tam Iran Khodro Company including managers and employees who are a total of 450 persons and 126 persons out of which were selected accidentally as the final sample. The instrument for gathering information is a questionnaire designated by the researchers. Cronbach's alpha coefficient of this questionnaire was calculated at 0.838 considering 15 persons as the initial sample and since this digit is more than 0.7, its reliability is proved. Student’s t-tests & Friedman test were used to test the hypotheses. The results indicate that the Tam Iran Khodro brand has no favorable conditions. Finally, occupational stability, promises of Tam Iran Khodro Company to the customers, motivation of the employees, and its role in the improvement of Tam Iran Khodro Brand and capabilities of Tam Iran Khodro Brand, respectively, were determined as effective factors for Tam Iran Khodro Brand from the viewpoint of the employees.
An Evaluation of Determining the Critical Success Factors for Implementing Total Quality Management
Authors: Islam Md. Shajedul
Published: June 2022

Many organizations have looked upon total quality management (TQM) as a way by which they could maintain a competitive edge, in recent years. Thus, this study attempted to identify the critical success factors of TQM implementation. Furthermore, this study has reviewed much-related literature which is relevant to critical success factors of TQM and its implementation in various organizations. The review focuses on the implementations, the impacts on the organization’s performance, and the encouraging indicators to adopt TQM in the organization. This study concludes on the critical success factors of TQM implementation. Because of the lack of identifying reasons, many organizations do not adopt the TQM approach properly into their organization. However, some organizations have already identified the benefits of the implementation of TQM on their organizational performance and they believe this approach could give them a chance to achieve their goals.
Workforce Diversity and Organizational Effectiveness in 21st Century Business Arena
Authors: Yahaya Ibrahim , Mato Umar
Published: June 2022

The paper critically examines workforce diversity and its effect on the organizational efficiency which has become the concern of the business environment in the present globalized business Arena in the 21st century, the objectives examined the recognition of workforce diversity by organizations, the anatomy of workforce diversity, and extent of organizational workforce diversity, the researched was based on secondary data and the findings are organizations in 21st century realized and committed to workforce diversity and it concluded for business competitive advantage, strategic workforce diversity is required in the globalized organization, and its recommended the high degree of leadership and managerial commitment in action for workforce diversity.

 

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