IDENTIFIKASI KADAR AIR, TINGKAT KECERAHAN DAN CITARASA KOPI ROBUSTA DENGAN VARIASI LAMA PERENDAMAN

Coffee is one type of plantation commodity favored by the community. The coffee beans obtained must have a good moisture content, brightness and taste. Based on the results of analysis of variance (ANOVA), it shows the effect of soaking time on the water content of Robusta coffee beans with treatment KT> Error KT, namely 2.5609> 0.05093. At the brightness level, the longer the soaking process, the lower the brightness value of the Robusta coffee beans without horn skin. The results of analysis of variance (ANOVA) soaking time had an effect on the brightness level of Robusta coffee beans. The analysis test results show that the value of treatment KT > error KT where the value is 23.151 > 2.187. The taste of Robusta coffee for each panelist has a different value, based on the results of the research on the taste of Robusta coffee, panelists prefer coffee with 24 hour immersion. The results of analysis of variance (ANOVA) for the duration of immersion significantly affected the taste of Robusta coffee, where the value of treatment KT > error KT was 10.84742 > 0.192182

Evaluation Of The Essential Oil Of Foeniculum Vulgare Mill (Fennel) Fruits Extracted By Three Different Extraction Methods By Gc/Ms

Background: Hydrodistillation (HD) and steam-distillation, or solvent extraction methods of essential oils have some disadvantages like thermal decomposition of extracts, its contamination with solvent or solvent residues and the pollution of residual vegetal material with solvent which can be also an environmental problem. Thus, new green techniques, such as supercritical fluid extraction and microwave assisted techniques, are potential solutions to overcome these disadvantages.Materials and Methods: The aim of this study was to evaluate the essential oil of Foeniculum vulgare subsp. Piperitum fruits extracted by three different extraction methods viz. Supercritical fluid extraction (SFE) using CO2, microwave-assisted extraction (MAE) and hydro-distillation (HD) using gas chromatography-mass spectrometry (GC/MS).Results: The results revealed that both MAE and SFE enhanced the extraction efficiency of the interested components. MAE gave the highest yield of oil as well as higher percentage of Fenchone (28%), whereas SFE gave the highest percentage of anethol (72%).Conclusion: Microwave-assisted extraction (MAE) and supercritical fluid extraction (SFE) not only enhanced the essential oil extraction but also saved time, reduced the solvents use and produced, ecologically, green technologies.Keywords: Foeniculum vulgare subsp. Piperitum, microwave-assisted extraction (MAE), Supercritical fluid extraction (SFE), Essential Oils,Anethol, Fenchone, Limonene, Pinene, GC/MS

What is the Way Allah's Word Manifests Itself in Yemeni Arabic?

In this paper, the author shows how ‘Allah’ is used in daily Yemeni Arabic conversations. The term Allah has a variety of meanings in Yemeni Arabic, as it does in the Arab world, reflecting the belief that Allah alone is in charge of all the affairs, grants blessings, and either encourages or criticizes someone to do something. The result of this is that the term Allah appears in several expressions when the term is part of a sentence containing the word. For example, there are expressions that have over one meaning, such as Allah alaik, which signifies two literal meanings. The word Allah can also be found in other expressions, but with entirely different meanings, including moaning or aiming for guidance. I conducted a study looking at the occurrences of social life contact, reactions, and the cultural influence of native Yemenis. The rest of this paper explores some of the other most common expressions used in Yemeni society, which shows the word is heavily influenced by religion and culture in its use in Yemeni society

University students adaptation to the Chinese culture : a case study of Middle East and North Africa (MENA) University students in China

This study explores the adaptation of Arab students to Chinese culture, using MENA students as examples. MENA students are from the Middle East and North Africa (Arabic is their mother tongue and is commonly referred to as “Arabs”). The purpose of their visit is to pursue their studies in China and to adopt the Chinese lifestyle. We examine how they integrated Chinese culture into their culture and vice versa to better understand their adaptation to the Chinese cross-culture. Their perception of Chinese society and lifestyle differs from their own. We conducted a survey comprising forty-one closed questions and one open-ended question to examine fifty-five MENA students studying in mainland China. Regardless of their backgrounds, the results suggest that their adaptation to Chinese culture appears to include adhering to Chinese etiquette, becoming close to the way of life, examining the development of Technology, and attempting to share Chinese development perspectives with their own cultures. In contrast to their own culture, they display a high degree of adaptability to the conditions and rules of Chinese society with 89% of total participants. Aside from displaying cultural diversity, they also highlight language proficiency challenges, impressions of the culture, and wonders of the host country

Sculpting oscillators with light within a nonlinear quantum fluid

Seeing macroscopic quantum states directly remains an elusive goal. Particles with boson symmetry can condense into such quantum fluids producing rich physical phenomena as well as proven potential for interferometric devices [1-10]. However direct imaging of such quantum states is only fleetingly possible in high-vacuum ultracold atomic condensates, and not in superconductors. Recent condensation of solid state polariton quasiparticles, built from mixing semiconductor excitons with microcavity photons, offers monolithic devices capable of supporting room temperature quantum states [11-14] that exhibit superfluid behaviour [15,16]. Here we use microcavities on a semiconductor chip supporting two-dimensional polariton condensates to directly visualise the formation of a spontaneously oscillating quantum fluid. This system is created on the fly by injecting polaritons at two or more spatially-separated pump spots. Although oscillating at tuneable THz-scale frequencies, a simple optical microscope can be used to directly image their stable archetypal quantum oscillator wavefunctions in real space. The self-repulsion of polaritons provides a solid state quasiparticle that is so nonlinear as to modify its own potential. Interference in time and space reveals the condensate wavepackets arise from non-equilibrium solitons. Control of such polariton condensate wavepackets demonstrates great potential for integrated semiconductor-based condensate devices.Comment: accepted in Nature Physic

Combining a leadership course and multi-source feedback has no effect on leadership skills of leaders in postgraduate medical education. An intervention study with a control group

<p>Abstract</p> <p>Background</p> <p>Leadership courses and multi-source feedback are widely used developmental tools for leaders in health care. On this background we aimed to study the additional effect of a leadership course following a multi-source feedback procedure compared to multi-source feedback alone especially regarding development of leadership skills over time.</p> <p>Methods</p> <p>Study participants were consultants responsible for postgraduate medical education at clinical departments. Study design: pre-post measures with an intervention and control group. The intervention was participation in a seven-day leadership course. Scores of multi-source feedback from the consultants responsible for education and respondents (heads of department, consultants and doctors in specialist training) were collected before and one year after the intervention and analysed using Mann-Whitney's U-test and Multivariate analysis of variances.</p> <p>Results</p> <p>There were no differences in multi-source feedback scores at one year follow up compared to baseline measurements, either in the intervention or in the control group (p = 0.149).</p> <p>Conclusion</p> <p>The study indicates that a leadership course following a MSF procedure compared to MSF alone does not improve leadership skills of consultants responsible for education in clinical departments. Developing leadership skills takes time and the time frame of one year might have been too short to show improvement in leadership skills of consultants responsible for education. Further studies are needed to investigate if other combination of initiatives to develop leadership might have more impact in the clinical setting.</p

Synthesis and chiroptical properties of hexa-, octa-, and decaazaborahelicenes : influence of helicene size and of the number of boron atoms.

Four members of a new class of cycloborylated hexa-, octa-, and deca-helicenes (1 a–d) have been prepared in enantiopure form, along with two cycloplatinated deca-helicenes (1 d′, 1 d1), further extending the family of cycloplatinated hexa- and octa-helicenes reported previously. The azabora[n]helicenes display intense electronic circular dichroism and large optical rotations; the dependence of the optical activity on the size of the helix (n=6, 8, 10) and the number of boron atoms (1 or 2) has been examined in detail both experimentally and theoretically. The photophysical properties (nonpolarized and circularly polarized luminescence) of these new fluorescent organic helicenes have been measured and compared with the corresponding organometallic phosphorescent cycloplatinated derivatives (1 a1–d1)

Mass spectrometry-based metabolomics:a guide for annotation, quantification and best reporting practices

Mass spectrometry-based metabolomics approaches can enable detection and quantification of many thousands of metabolite features simultaneously. However, compound identification and reliable quantification are greatly complicated owing to the chemical complexity and dynamic range of the metabolome. Simultaneous quantification of many metabolites within complex mixtures can additionally be complicated by ion suppression, fragmentation and the presence of isomers. Here we present guidelines covering sample preparation, replication and randomization, quantification, recovery and recombination, ion suppression and peak misidentification, as a means to enable high-quality reporting of liquid chromatography– and gas chromatography–mass spectrometry-based metabolomics-derived data.</p