bluuebunny/crossref_metadata_2025_split huggingface dataset:
Assessing Senior High School Science Students’ Planning Skills In Selected Topics From The Integrated Science Syllabus
Authors: Naah Anna M. , Peter Mayeem Bilatam , Adjei Augustine , Ossei-Anto Aquinas 
Published: November 2018

The study was conducted to assess Senior High School Science Students’ proficiency level in planning practical activities for ‘Test of Practical’ with selected topics from the Integrated Science syllabus. A total of 180 respondents (90 male and 90 females) out of a population of 1029 were sampled from three senior high schools in the Municipal Education, Offinso. Computer generated random numbers were used to randomly select 30 males and 30 females from each school in the municipality. The study employed the performed task instrument. Three tasks on planning were developed with their scoring formats and scoring details. Task A was on ‘distillation’. Task B on ‘density’ and task C on ‘osmosis’. A pilot test was conducted in one of the seniorhigh technical schools in the Atwima Nwabiagya District Educationand the response dichotomously scored, internal reliabilityof the various tasks was assessed using Kuder Richardson 20. The reliability of the various tasks obtained were task A, (0.731); B, (0.945); and C, (0.86). the data obtained for the actual study were statistically analyzed using descriptive, (percentages and means) inferential statistics (Independent t-test and Analysis of variance(ANOVA)). The students exhibitedhigh proficiency on the planningskills. There were many similarities between the performances of female and male students of the various schools. The performance of students of school A were statistically significantly different fromschools B and C on task B. from the major findings of this study, it is recommended that ‘Test of Practical’ questions should be related to real life situations
Ultrasound Assisted Electrochemical Deposition of Polypyrrole - Carbon Nanotube Composite Film: Preparation, Characterization and Application to the Determination of Droxidopa
Authors: Özdokur Kemal V. , Kuşcu Ceren , Ertaş Fatma N. 
Published: November 2018

Background:
Nowadays, polymeric composites modified with carbonaceous nanomaterials
have been popular due to their greater application potentials in many application fields. However,
the structural consistency of the composite prepared by electropolymerization suffers from agglomeration
of Carbon Nanotubes (CNTs) probably due to their poor dispersion in the coating solution.
Present study describes a new synthesis route for the preparation of polypyrrole/CNT composite film
on a Glassy Carbon Electrode (GCE) via combining the ultrasonication and electrochemical pulsed
deposition for the first time. The performance of the composite film was tested by monitoring the
electrochemical oxidation of droxidopa which is used as a new psychoactive drug and synthetic amino
acid precursor which acts as a prodrug to the neurotransmitters.

Methods:
The polypyrrole/CNT composite film was deposited onto a glassy carbon electrode via
combining the ultrasonication and electrochemical pulsed deposition. The composite film was characterized
by Scanning Electron Microscopy (SEM), Fourier Transfer Infrared Spectroscopy (FTIR),
Electrochemical Impedance Spectroscopy (EIS) and Cyclic Voltammetry (CV). Then after, the electrochemical
behavior of droxidopa was investigated on the GCE/PPy-CNT electrode.

Results:
SEM images of the surface morphology have revealed a more ordered film formation and
enhanced conductivity of the surface has been confirmed by EIS measurements. The synergetic effect
of this composite film was tested by monitoring the electrochemical oxidation of a new psychoactive
drug; droxidopa at 0.45 V. The influence of solution parameters such as medium pH, pyrrole
concentration and amount of CNT along with the instrumental parameters including applied pulse
number on the peak formation was investigated by aid of cyclic voltammetry. Under the optimal
conditions, by monitoring the oxidation peak in dp mode, two linear ranges have been observed in 4 -
20 μM which is well suited for droxidopa analysis in pharmaceutical preparations. The limit of detection
(S/N=3) was calculated as 1.3 μM.

Conclusion:
Present study offers a fast, easy and sensitive method for the determination of droxidopa
by providing a novel route for the preparation of PPy-CNT composite films for any further
studies.
Model Pengembangan Paradigma Masyarakat bagi Kepemilikan Rumah yang Terpisah dari Tanah
Authors: Roestamy Martin , Rahmawati Rita 
Published: November 2018

AbstractThe main issue causing difficulties for low income people to get decent housing is the paradigm they have that owning a house means owning the land. This Study used quantitative and qualitative approach. Results showed that the community paradigm of separated ownership of house and land was low. this study resulted in a formulation of development model of community paradigm of house ownership separated from land ownership. Based on this model, it was concluded that community paradigm of house ownership separated from land ownership could be developed if there were interesting compensations to eliminate people hesitance about having an apartment. IntisariPersoalan utama yang menyebabkan masyarakat berpenghasilan rendah di Indonesia sulit memperoleh rumah adalah adanya paradigma masyarakat tentang kepemilikan rumah yang bermakna kepemilikan tanah. Studi ini menggunakan pendekatan kualitatif dan kualitatif. Hasil penelitian menunjukkan bahwa paradigma masyarakat tentang kepemilikan rumah yang terpisah dari tanah masih rendah. Masyarakat lebih menyukai tinggal di rumah yang menyatu dengan tanah dibandingkan dengan tinggal di rumah susun. Penelitian ini juga menghasilkan rumusan model pengembangan paradigma masyarakat bagi kepemilikan rumah yang terpisah dari tanah. Berdasarkan model tersebut, paradigm masyarakat dapat dikembangkan jika terdapat konpensasi menarik dari kepemilikan rumah susun.
Analisis Program Penyebaran dan Pengembangan Ternak Sapi pada Kawasan Sentra Peternakan Sapi di Kabupaten Merangin
Authors: Afriani Afriani , Firmansyah F , Hamzah A K , Rahmi R 
Published: November 2018

Penelitian ini bertujuan untuk menganalisis program penyebaran dan pengembangan ternak sapi di kawasan sentra peternakan sapi Kabupaten Merangin. Metode penelitian yang digunakan pada penelitian ini adalah metode survei. Teknik penarikan sampel dalam penelitian ini menggunakan metode Stratified Random Sampling. Instrumen penelitian diuji dengan uji dan uji reliabilitas Data penelitian skala ordinal dilakukan transformasi menjadi skala interval dengan menggunakan Method of Succesive Interval (MSI). Untuk mengetahui faktor-faktor yang mempengaruhi tingkat kelancaran perguliran ternak digunakan analisis regresi linear berganda. Program penyebaran dan pengembangan ternak sapi di kawasan sentra peternakan sapi Kabupaten Merangin belum berjalan secara optimal. Cukup banyak tingkat perguliran ternak sapi yang masuk kategori lancar, namun sisi lain cukup banyak juga kategori kurang dan tidak lancar. Adapun tingkat kelancaran mengulirkan ternak sapi pada program penyebaran dan pengembangan ternak sapi di kawasan sentra peternakan sapi Kabupaten Merangin dipengaruhi oleh karakter peternak.

Kata kunci: penyebaran, pengembangan, sentra, sapi, perguliran
CARACTERÍSTICAS FISICOQUÍMICAS DE TRES VARIEDADES DE CAFÉ TOSTADO Y MOLIDO CULTIVADOS EN NORTE DE SANTANDER
Authors: Parada Marisol , Caballero Luz , Rivera María 
Published: November 2018

La calidad del café es el resultado de un conjunto de procesos que permiten el desarrollo y conservación de sus características físico-químicas hasta su transformación y consumo. El objetivo fue evaluar las características fisicoquímicas de tres variedades de café cultivados en el municipio de Toledo, Norte de Santander (Castillo, Colombia y Típica) de la especie Coffea arábiga. Las muestras de café (600 gramos) fueron recolectadas, descascarilladas, tostadas, molidas y empacadas; el tostado fue a 130 ± 1 °C, tamaño de partícula mediano (NTC 3534). Se realizaron pruebas de: pH, humedad (NTC 2558), acidez titulable (NTC 5247), granulometría (NTC 3534) y color (NTC 3534). Los resultados fueron analizados estadísticamente con un ANOVA de un factor estableciendo si existían diferencias en las características fisicoquímicas de las muestras de café. Las tres variedades de café presentaron diferencias estadísticas significativas entre el pH y el valor de L en el color.
CALIDAD MICROBIANA DE LA CARNE DE OVINO DERIVADA DE LA EDAD DE SACRIFICIO Y TIEMPO DE MADURACION
Authors: Duran Osorio Daniel Salvador 
Published: November 2018

Un índice que permite garantizar mayor seguridad sanitaria del consumo de la carne ovina en fresco es su calidad microbiana, que se debe alcanzar durante todo el proceso de producción y comercialización. En Colombia existen pocas plantas de sacrificio específicas y el sacrificio se hace a diferentes edades. Por ello, el propósito fue evaluar la calidad microbiológica de la carne ovina (corte rack) derivada de la edad de sacrificio y del tiempo de maduración. De canales de ovinos de 4, 6, 8 y 10 meses de edad y madurada en tres tiempos (24, 48 y 72 horas), se obtuvo el corte rack, siendo empacado al vacío (95%) y almacenado durante 20 días a 4±2°C. Se analizaron en los días 0; 10 y 20 coliformes totales y fecales, Staphillococcus auereus, Clostridium sulfito reductoras, Salmonella y Listeria monocytogenes. Se obtuvo como resultados que durante el periodo de almacenamiento, todos los tratamientos relacionados con la edad del animal y la maduración de la carne, presentaron carga microbiana que cumple con los requisitos establecidos por el INVIMA. La carne procedente de animales de 10 meses de edad fue la que registró menores recuentos microbiológicos. Por tanto, la edad del animal y la maduración no es factor influyente en la microbiologia analizada en la carne ovina. Palabras clave: carga microbiana, carne de ovino, cordero, maduración, sacrificio
EFECTO DE LA PASTEURIZACIÓN Y LA TEMPERATURA DE INCUBACIÓN EN LA FERMENTACION ALCOHOLICA DEL MOSTO DE MORA
Authors: Leon C , Jaimes Portilla Jean 
Published: November 2018

La fermentación alcohólica es un proceso anaeróbico en el cual intervienen microorganismos los cuales actúan dependiendo de las condiciones intrínseca y extrínsecas que sean expuesto. El presente estudio tuvo como objetivo evidenciar el efecto de la pasteurización y temperatura de incubación en la fermentación alcohólica de mostos a base de mora tipo castilla, obtenida de una finca de Pamplona, Norte de Santander. El mosto fue ajustado a solidos solubles de 15°Brix y dividió en 2 pares de 2 litros. Una parte fue pasteurizada y la otra no, posteriormente se subdividieron cada parte en 2 para obtener, dos mostos pasteurizados y dos sin pasteurizar, a cada mosto se le adicionó 1 gramo de levadura enológica previamente hidratada. Dos de ellos (Pasteurizado y no pasteurizado) fueron llevados a temperatura de incubación de 30 ± 2 °C y los otros a temperatura de 20 ± 2 °C. Se analizaron los grados Brix, pH y alcohol durante los días 0, 3, 8 y 10. Los resultados incidieron que el mosto no pasteurizado e incubado a 30 ± 2 °C fue el que presentó mayor grado alcohólico, concluyendo que ésta es la temperatura óptima para desarrollar la fermentación alcohólica y que a pesar de que pasteurizar e inocular con la cepa de levadura puede es un buen “Starter” para producción de alcohol.
Renormalization issues for a whole abelian model
Authors: Doria Renato , Chauca J. 
Published: November 2018

Considering that nature acts as a group, a whole abelian model is being developed. Classically,Â new aspects were observed as elds collective behavior and elds interacting among themselves andÂ with mass through a global Lorentz force. This work analyzes some quantic aspects. PerturbationÂ theory means that we know about 1-PI graphs. In a previous work, we have studied the quantumÂ action principle, power-counting, primitively divergent graphs, Ward-Takahashi identities. ThisÂ work concerns the study of counterterms and physical perturbation theory. It introduces a wholeÂ renormalization programme which informations are obtained from the common gauge parameterÂ which establishes the elds set. It derives relationships between renormalization constants andÂ on perturbative persistence on one masslessness eld in the fAIg set. It also argues on nitudeÂ possibilities through a whole expansion for the graphs.
Newton's First Law of motion is not real
Authors: Wijesuriya K.H.K. Geerasee 
Published: November 2018

Newton's first law of motion is well recognized theory for physics. But my attempt is to obtain a contradiction to Newton's first law of motion. It may be a challenge to the physics world.Â Consider an object that has carried to the empty space that has not effected by any external force. Then apply an external force with some heat. At time T=0, the force applies to the object. Then, after some timeduration, we take away the force. By considering the behaviors of fundamental building particles of theobject, we obtain a contradiction to the Newton's first law of motion.Â There are large number of applications of Newton's first law of motion. Specifically, for the space-based experiments, this new concept plays a major role.Â
Analysis of flow of polar and non polar incompressible ferrofluids
Authors: Nargund Achala , C. S Asha 
Published: November 2018

In this paper, flow between two parallel plates is analyzed for both polar and non polarÂ ferrofluids. Velocity is obtained without pressure gradient for polar fluid and with pressure gradient forÂ non polar fluid. The solution of the spin velocity is found in terms of applied magnetic field and magneticÂ flux density for polar fluid. Shear stress is calculated for both polar and non polar ferrofluid.
INFLUENCE DU TRAITEMENT THERMIQUE ET MÃ‰CANIQUE SUR LES PROPRIÃ‰TÃ‰S MÃ‰CANIQUES ET STRUCTURALES DES ACIERS AU MANGANÃˆSE MOULÃ‰S.
Authors: Madani Saad El , Lenda O. Ben , Sabir F. , Elhamzi S. , Gziri H. , Ibnlfassi A. , Zerrouk L. 
Published: November 2018

Molded Steel with manganese have approximately 1,2% C and 12% Mn, this high proportion of manganese gives to this alloy a stable austenitic structure onÂ a room temperature. The experimental methods used for metallurgical studies are spark optical emission spectroscopy, optical microscopy, scanning electron microscopy, micro-hardness and hardnesss test. Steel 1 is heat-treated constitued by 15,516 %Â of manganese, 2,677 % ofÂ chromuim and 1,286 % of carbon. Steel 2 is mechanically treated contains 13,454 % of manganese, 1,721 % of chromuim and 1,213 % of carbon . Steel 1 has sustained quench at 1070Â°C, for two differentsÂ maintaining times on oven 30 and 50 minutes for a thickness of 150 millimeters then for two differentsÂ thickness 100 and 150 millimeters for a time of 50 minutes. When maintaining time on the oven increase for low dimension, surfaceâ€™s alloy become more ductile. We have applied a mechanical treatement manually on steel 2 surface, his hardness increase significantly.
The Graviton: An Emergent Solution From The Equivalence of Universal Magnetic Field Intensity and Radiant Flux Density
Authors: Persinger Michael A 
Published: November 2018

Measurements have shown an inverse association between natural electromagnetic intensities and irradiance from background photons. In general for every ~10-12 WÂ·m-2 increase in photon radiant flux densitythere was a1 nT decrease in intensity of the ambient static (geo-)magnetic field. Dimensional equivalence of the two quantities required the latter to be multiplied by ~10-3 AÂ·s-1.Â Assuming ~1079 particles universally, each with a unit charge, the rest mass of that particle would be ~10-65 kg or the median solution for the graviton. On the bases of the calculations and conceptual inferences, entanglement phenomena across the space-time that defines the universe could be mediated by a gravitational field whose quantized component, the mass of a graviton, when expressed as the square of the hypothetical entanglement velocity, is light.Â This velocity (1023 mÂ·s-1) is derivable from independent approaches that require the consideration of the universe as a single set. If this inference derived form empirical measurements is valid, then there is additional evidence that â€œexcess correlationâ€ and entanglement of photons anywhere in the universe is mediated by quantized components of a gravitational field that is contained within the total spatial and temporal boundaries.
A Study on Baryon Masses with Diquark as Composite Fermion
Authors: Bhattacharya A. , Ghosh R. , Chakrabarti B. 
Published: November 2018

Diquarks are described in the framework of composite fermion (CF) model of quasi particle. The masses of the light Â [Î›0, Î£-, Îž-, Î©-], heavy [Î›+c, Î›0b, Î£+c, Î£0b, Îž0c, Îž0b, Î©0c, Î©-b], doubly heavy Â [Îž++cc ,Îž+cc, Îž0cb, Îž+cb ,Îž0bb, Îž-bb, Î©+cc, Î©0cb, Î©-bb ] and triply heavy [Î©ccc, Î©ccb, Î©cbb, Î©bbb] baryons have been studied for JP = (1/ 2)+ and (3/2)+ states, considering the diquark-quark configuration for the baryons. The results are found to be in good agreement with available experimental data and other theoretical works.
The Development of Relativity and Einstein
Authors: Lo C. Y. 
Published: November 2018

There are errors in general relativity that must be rectified. As Zhou pointed out, Einsteinâ€™s covariance principle is proven to be invalid by explicit examples. Linearization is conditionally valid. Pauli's version of the equivalence principle is impossible in mathematics. Einstein's adaptation of the distance in Riemannian geometry is invalid in physics as pointed out by Whitehead. Moreover, it is inconsistent with the calculation on the bending of light, for which a Euclidean-like framework is necessary. Thus, the interpretation of the Hubble redshifts as due to receding velocities of stars is invalid. The Einstein equation has no dynamic solutions just as Gullstrand suspected. All claims on the existence of dynamic solutions for the Einstein equation are due to mistakes in non-linear mathematics. For the existence of a dynamic solution, the Einstein equation must be modified to the Lorentz-Levy-Einstein equation that have additionally a gravitational energy-stress tensor with an anti-gravity coupling. The existence of photons is a consequence of general relativity. Thus, the space-time singularity theorems of Hawking and Penrose are actually irrelevant to physics because their energy conditions cannot be satisfied. The positive mass theorem of Schoen and Yau is misleading because invalid implicit assumptions are used as Hawking and Penrose did. There are three experiments that show formula E = mc2 is invalid, and a piece of heated-up metal has reduced weight just as a charged capacitor. Thus, the weight is temperature dependent. It is found, due to the repulsive charge-mass interaction, gravity is not always attractive to mass. Since the assumption that gravity is always attractive to mass is not valid, the existence of black holes are questionable.Â Because of the repulsive charge-mass interaction, the theoretical framework of general relativity must be extended to a five-dimensional relativity of Lo, Goldstein & Napier. Thus Einstein's conjecture of unification is valid. Moreover, the repulsive gravitational force from a charged capacitor is incompatible with the notion of a four-dimensional space. In Quantum theory, currently the charge-mass interaction is neglected. Thus, quantum theory is not a final theory as Einstein claims.
Fusion and Breakup Reactions of 17S + 208Pb and 15C + 232ThHalo Nuclei Systems
Authors: Majeed Fouad A. , Abdul-Hussien Yousif A. 
Published: November 2018

In this study the calculations of the total fusion reaction cross section have been performed for fusion reaction systems 17F + 208Pb and 15C + 232Th which involving halo nuclei by using a semiclassical approach.The semiclassical treatment is comprising the WKB approximation to describe the relative motion between target and projectile nuclei, and Continuum Discretized Coupled Channel (CDCC) method to describe the intrinsic motion for both target and projectile nuclei. For the same of comparsion a full quantum mechanical clacualtions have been preforemd using the (CCFULL) code. Our theorticalrestuls are compared with the full quantum mechaincialcalcuations and with the recent experimental data for the total fusion reaction Â checking the stability of the distancesThe coupled channel calculations of the total fusion cross section Ïƒfus, and the fusion barrier distribution Dfus. The comparsion with experiment proves that the semiclassiacl approach adopted in the present work reproduce the experimental data better that the full quantal mechanical calcautions.Â
Assessment of Environment Traffic Noise Pollution in Uvwie Local Government Area of Delta State, Nigeria.
Authors: E Esi Oghenevovwero , Ovie Edomi 
Published: November 2018

The assessment of environmental traffic noise pollution in Uvwie local government area of Delta State, Nigeria was carried out using a well calibrated portable digital sound level meter (ModelÂ CEL-231).Â The sound level meter is an instrument used for measuring the exposure level of noiseÂ in the field. The measurement was done three times/day (Morning session 9am â€“ 10am, afternoon session 1pm â€“ 2pm and Evening session 4pm â€“ 5pm) and readings were taken. The mean results measuredÂ from the studied area ranged from 74.61dB (A) Â in the evening to 76.92dB (A) Â in the afternoon with mean average of 76.66dB (A).The obtained mean values of traffic noise when compared with the permissible level for road traffic noise of 65 decibels dB (A) in commercial area during the Day time, it was observed that theÂ obtained mean level results exceeded the permissible standardÂ limit. These high values can be attributed to poor maintenance of the vehicles, indiscriminate usage of pressure horns and Â present of heavy duty truck that load petroleum product and cargo containers from the Warri refinery and Warri port (Nigeria Port Authority) respectively. This study revealed that immediate health implication may not be observed at the present level, but long term health effects are probable in the nearest future.
Discrete Time Flowing and A Contradiction to Einsteinâ€™s Assumptions
Authors: Wijesuriya K.H.K. Geerasee 
Published: November 2018

Due to the limited velocity of light, there is a time duration to propagate a light ray between any two distinct spacetimeÂ points in the universe. Upon that argument, authorâ€Ÿs attempt is to obtain a very specific result that may useful forÂ the Cosmology subject fields, string theory and the Astronomy subject fields.Â The final result implies that the time flowing depends on the space time location and time flowing is a relative fact inÂ the universe. â€œTime flowing is a relative factâ€ does not mean the notion in the Special theory of Relativity regardingÂ the relativity in the time.