Pengaruh Layanan Penguasaan Konten dengan Latihan Berpidato terhadap Peningkatan Kepercayaan Diri Siswa Kelas X SMA N 14 Pekanbaru T. A 2015/2016

This study aimed to describe the self-confidence of students before given exercises speech, to find out how the process of service delivery, to find a picture after a given practice speech, differences in the confidence of students before with after practice speech and to see the difference in the confidence of students in the experimental group with the control group as well as the influence of mastery of content services with speech exercises. These research subjects Class X High School n 14 Pekanbaru totaling 60 students. The results of this study are given practice a speech before the confidence of the students were low category (50%). Service delivery process is done four times. After the implementation of speech exercises self-confidence of students at the high category (57%), this proves that there are significant differences between the self-confidence of students before and after the speech exercises. Then to see the differences in the experimental group and control group then used the formula Independent sample t test in SPSS with the t = 5.846 with sig (2-tailed) of 0.000. Because the value sig (2-tailed) 0.000 <0.005, it can be concluded "there is a difference between the students\u27 confidence in the experimental group and control group. As for the contribution of services to the exercise mastery of content addressed to the increased confidence of students that is equal to 57%

Half-metallicity in EuN: A First-Principles Calculation

We report on the electronic and magnetic properties of the rock salt (RS) and cesium chloride (CsCl) phases of EuN. Our calculation was performed within the framework of the density functional theory (DFT), as implemented in the Wien2k package. We have used the generalized gradient approximation (GGA) for the exchange correlation potential and, in certain, cases the Local Spin Density (LSDA) approximation, with the Hubbard interaction taken into account.  Our calculation demonstrates the presence of an energy gap in both of the RS and CsCl structures when only spin-polarized calculation is used. However, taking the Hubbard potential into consideration, via the LSDA+U scheme, led to the disappearance of the energy gap, and hence to the absence of the half-metallic behavior in this system. Keywords: rare-earth nitrides; magnetic moment; DFT; DOS; half metallicity; spin density

The Effect of Docetaxel (Taxotere®) on Human Gastric Cancer Cells Exhibiting Low-Dose Radiation Hypersensitivity

Low-dose radiation hypersensitivity (HRS) describes a phenomenon of excessive sensitivity to X ray doses <0.5 Gy. Docetaxel is a taxane shown to arrest cells in the G2/M phase of the cell cycle. Some previous studies suggested that HRS might result from the abrogation of the early G2 checkpoint arrest. First we tested whether HRS occurs in gastric cancer—derived cells, and whether pre-treatment of cells with low docetaxel concentrations can enhance the magnitude of HRS in gastric cancer cells. The results demonstrated HRS at ~0.3 Gy and the synergy between 0.3 Gy and docetaxel (3 nM for 24 h), and the additivity of other drug/dose combinations. The synergistic effect was associated with a significant docetaxel-induced G2 accumulation. Next, we evaluated in time-course experiments ATM kinase activity and proteins associated with the induction and maintenance of the early G2 checkpoint. The results of multi-immunoblot analysis demonstrate that HRS does not correlate with the ATM-dependent early G2 checkpoint arrest. We speculate that G2 checkpoint adaptation, a phenomenon associated with a prolonged cell cycle arrest, might be involved in HRS. Our results also suggest a new approach for the improvement the effectiveness of docetaxel-based radiotherapy using low doses per fraction

Lidar Measurements for Desert Dust Characterization: An Overview

We provide an overview of light detection and ranging (lidar) capability for describing and characterizing desert dust. This paper summarizes lidar techniques, observations, and fallouts of desert dust lidar measurements. The main objective is to provide the scientific community, including non-practitioners of lidar observations with a reference paper on dust lidar measurements. In particular, it will fill the current gap of communication between research-oriented lidar community and potential desert dust data users, such as air quality monitoring agencies and aviation advisory centers. The current capability of the different lidar techniques for the characterization of aerosol in general and desert dust in particular is presented. Technical aspects and required assumptions of these techniques are discussed, providing readers with the pros and cons of each technique. Information about desert dust collected up to date using lidar techniques is reviewed. Lidar techniques for aerosol characterization have a maturity level appropriate for addressing air quality and transportation issues, as demonstrated by some first results reported in this pape

ATP-independent reversal of a membrane protein aggregate by a chloroplast SRP subunit

Membrane proteins impose enormous challenges to cellular protein homeostasis during their post-translational targeting, and they require chaperones to keep them soluble and translocation competent. Here we show that a novel targeting factor in the chloroplast signal recognition particle (cpSRP), cpSRP43, is a highly specific molecular chaperone that efficiently reverses the aggregation of its substrate proteins. In contrast to 'ATPases associated with various cellular activities' (AAA+) chaperones, cpSRP43 uses specific binding interactions with its substrate to mediate its 'disaggregase' activity. This disaggregase capability can allow targeting machineries to more effectively capture their protein substrates and emphasizes a close connection between protein folding and trafficking processes. Moreover, cpSRP43 provides the first example to our knowledge of an ATP-independent disaggregase and shows that efficient reversal of protein aggregation can be attained by specific binding interactions between a chaperone and its substrate

Channel estimation for MIMO-OFDM systems based on data nulling superimposed pilots

This paper proposes a new channel estimation algorithm based on data nulling superimposed pilots for the spatial multiplexing multiple-input-multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems. In the proposed method each OFDM data symbol of each transmit antenna is spread over all subcarriers by using a spreading matrix then nulls are introduced at certain subcarriers to cancel the mutual interference between data symbols and superimposed pilots. At receiver accurate channel estimation can be easily acquired based on the superimposed pilots. Then the superimposed pilots are removed from the received signal and simple iterative data detection scheme is used to compensate the distortion which occurred in the data symbols. The simulation results of the proposed algorithm show improvement in the estimation accuracy, bit error rate (BER) and computational complexity compared to that of the conventional superimposed pilot technique. The simulation results also show that the performance of the proposed technique approaches that of the frequency division multiplexed pilots technique while having higher data rate and some excess in the receiver complexity

Empowering deaf and hard hearing females toward premarital counseling and genetic screening: An educational intervention based on empowerment model

Hearing loss affects many people worldwide, and it hinders speech, language, and social development. Consanguineous marriageis the most prevalent social custom that leads to an increased prevalence of congenital anomalies. Premarital Counseling andGenetic Screening (PMSGC) educational program is urgently needed to empower deaf and hard hearing girls. This study aimed toinvestigate the effect of educational intervention based on the empowerment model on deaf and hard hearing females' self-efficacy,knowledge, and attitude toward PMSGC. A Quasi-experimental research design was conducted on 64 deaf and hard hearing femalestudents. The data collection instrument comprised four parts: basic data and personal/family history, PMSGC quiz, Likert attitudescale, and general self-efficacy scale. Data were collected from September to December 2020. The empowerment educational intervention was conducted in four sequential phases; needs assessment, planning, implementation, and evaluation. The intervention addressed the students' knowledge, attitudes and self-efficacy. The results showed that 76.6% of the study participants had consanguineous marriage between their parents, 64.1% had a history of hereditary deafness in first-degree relatives. There were statistically significant differences between the total knowledge, attitude, and self-efficacy before and after intervention (p&lt;0.001). In detail, 76.6% of the participants had good knowledge after the intervention compared to only 12.5% before it. Besides, 81.3% of the study participants had a positive attitude toward PMSGC before the intervention compared to 95.3% after it. Selfefficacy was low (25.0%) or moderate (75%) before the intervention compared to moderate (45.3%) or high (42.2%) after the intervention. Educational intervention based on the empowerment model significantly increased the deaf and hard hearing population's self-efficacy,&nbsp; knowledge, and attitude toward PMSGC. The use of the empowerment model in health education should be encouraged and taught to the medical and paramedical students. Keywords: Attitude, knowledge, self-efficacy, empowerment model, deaf and hard hearing females, premarital counseling, genetic screening &nbsp; La perte auditive affecte de nombreuses personnes dans le monde et entrave la parole, le langage et le développement social. Lemariage consanguin est la coutume sociale la plus répandue qui conduit à une prévalence accrue d'anomalies congénitales. Unprogramme éducatif de conseil et de dépistage génétique prénuptial (PMSGC) est nécessaire de toute urgence pour autonomiserles filles sourdes et malentendantes. Cette étude visait à étudier l'effet d'une intervention éducative basée sur le modèle d'autonomisation sur l'auto-efficacité, les connaissances et l'attitude des femmes sourdes et malentendantes à l'égard de PMSGC.Un plan de recherche quasi expérimental a été mené sur 64 étudiantes sourdes et malentendantes. L'instrument de collecte dedonnées comprenait quatre parties: les données de base et les antécédents personnels / familiaux, le questionnaire PMSGC, l'échelled'attitude de Likert et l'échelle d'auto-efficacité générale. Les données ont été collectées de septembre à décembre 2020. L'intervention éducative d'autonomisation s'est déroulée en quatre phases séquentielles; évaluation des besoins, planification, miseen œuvre et évaluation. L'intervention a porté sur les connaissances, les attitudes et l'auto-efficacité des élèves. Les résultats ontmontré que 76,6% des participants à l'étude avaient un mariage consanguin entre leurs parents, 64,1% avaient des antécédents desurdité héréditaire chez des parents au premier degré. Il y avait des différences statistiquement significatives entre les connaissances totales, l'attitude et l'auto-efficacité avant et après l'intervention (p &lt;0,001). Dans le détail, 76,6% des participants avaient de bonnesconnaissances après l'intervention contre seulement 12,5% avant celle-ci. En outre, 81,3% des participants à l'étude avaient uneattitude positive envers PMSGC avant l'intervention, contre 95,3% après. L'auto-efficacité était faible (25,0%) ou modérée (75%)avant l'intervention par rapport à modérée (45,3%) ou élevée (42,2%) après l'intervention. L'intervention éducative basée sur lemodèle d'autonomisation a considérablement augmenté l'auto-efficacité, les connaissances et l'attitude de la population sourde etmalentendante à l'égard de l'EMSP. L'utilisation du modèle d'autonomisation dans l'éducation sanitaire devrait être encouragée etenseignée aux étudiants en médecine et paramédical. Mots-clés: Attitude, connaissances, auto-efficacité, modèle d'autonomisation, femmes sourdes et malentendantes, counseling prénuptial, dépistage génétiqu

Effect of heat treatment on the antioxidant activities of two cultivars of sweet potatoes

Natural sources of antioxidants are derived from fruits, vegetables and wine, whilst artificial supplements are from teas and spices. Sweet potato (Ipomoea batatas) is an excellent natural source of vitamins and minerals, and likely a great source of antioxidant. The objective of this study is to analyze the antioxidant activity of orange sweet potato (Vitato) and purple sweet potato (All purple), prepared as heat dry and moist heat for 30 minutes at 100oC. All the samples were obtained from Pasir Puteh and MARDI Telong, Bachok, Kelantan, respectively. Both samples were soaked into methanol to obtain the crude extract prior to analyzing for antioxidant activity by using 2, 2-diphenyl-1-picryl hydrazyl (DPPH). IC50 values of dry heat and moist heat Vitato were 0.40mg/L and 0.20mg/L while dry heat and moist heat, All purple were 0.32mg/L and 0.19mg/L, respectively. Both moist heat samples enjoyed higher scavenging activities compared to dry heat samples. However, the All purple sample of moist heat is the most superior one. Significant difference of IC50 values between dry heat and moist heat sample differ significantly. Thus, this study clearly demonstrated that moist heat sweet potato exhibited excellent increase in antioxidant activity