SIFAT FISIK DAN MEKANIK PAPAN PARTIKELDARI KAYU SENGON (PARASERIANTHES FALCATARIA. L) DAN SERBUK SABUT KELAPA (COCOS NUCIFERA.L)

This research aims to utilize the low quality of wood i.e.sengon (Paraserianthes falcataria) and waste of  Coconut fiber dust to made particle board. Particle board made with different ratio i.e 100%  sengon, 80%  sengon and 20% Ccocnut fiber with adhesive concentration of 12%, 14% and 16%. Particle board made with size 30 cm x 30 cm x 1 cm with a density of 0,6 g/cm3 at a pressure of 25 kg/cm2 at  1400C for 8 minutes. Evaluated the physical properties (density, water content, water absorption and thickness swelling) and mechanical properties modulus of elastis (MOE), modulus of rupture (MOR) and internal bonding (IB) was conducted in accordance with JIS A 5908-2003 standard. The results showed that the density value sranged between 0.53g/cm3 - 0.58g/cm3, water contentranged from 6.63%-8.27%, thickness swelling ranged between7.51% -11.75%,water absorption ranged between 53.75% - 64.62%, MOE ranged between 14654.54 kg/cm2 - 18031.95 kg/cm2, MOR ranged between 169.54kg/cm2 - 218.47 kg/cm2, internal bonding ranged from3.33 kg/cm2-4.93 kg/cm2. The particle board values can fulfill the standart of JIS A 5908-2003, except for the value of the MOE. Composition of raw materials significantly affect the water absorption value, MOE and MOR mean while the concentration of adhesive significantly affect the value of thickness swelling, water absorption, MOE and MOR. Interaction between the ratio of raw material and concentration of adhesive did not significantly affect the physical and mechanical properties of particle board. The best values of particle board was achieved with composition sengon 80% and 20% coconut fiber dust withan adhesive concentration 16%. Keyword :        Coconut fiber, paraserianthes falcataria, particle board, physical, mechanical properties

Sifat Fisik dan Mekanik Papan Partikeldari Kayu Sengon (Paraserianthes Falcataria. L) dan Serbuk Sabut Kelapa (Cocos Nucifera.l)

This research aims to utilize the low quality of wood i.e.sengon (Paraserianthes falcataria) and waste of Coconut fiber dust to made particle board. Particle board made with different ratio i.e 100% sengon, 80% sengon and 20% Ccocnut fiber with adhesive concentration of 12%, 14% and 16%. Particle board made with size 30 cm x 30 cm x 1 cm with a density of 0,6 g/cm3 at a pressure of 25 kg/cm2 at 1400C for 8 minutes. Evaluated the physical properties (density, water content, water absorption and thickness swelling) and mechanical properties modulus of elastis (MOE), modulus of rupture (MOR) and internal bonding (IB) was conducted in accordance with JIS A 5908-2003 standard. The results showed that the density value sranged between 0.53g/cm3 - 0.58g/cm3, water contentranged from 6.63%-8.27%, thickness swelling ranged between7.51% -11.75%,water absorption ranged between 53.75% - 64.62%, MOE ranged between 14654.54 kg/cm2 - 18031.95 kg/cm2, MOR ranged between 169.54kg/cm2 - 218.47 kg/cm2, internal bonding ranged from3.33 kg/cm2-4.93 kg/cm2. The particle board values can fulfill the standart of JIS A 5908-2003, except for the value of the MOE. Composition of raw materials significantly affect the water absorption value, MOE and MOR mean while the concentration of adhesive significantly affect the value of thickness swelling, water absorption, MOE and MOR. Interaction between the ratio of raw material and concentration of adhesive did not significantly affect the physical and mechanical properties of particle board. The best values of particle board was achieved with composition sengon 80% and 20% coconut fiber dust withan adhesive concentration 16%. Keyword : Coconut fiber, paraserianthes falcataria, particle board, physical, mechanical properties

PEMBANGUNAN APLIKASI PENGENALAN VAKSIN COVID-19 BERBASIS AUGMENTED REALITY PADA RS EFARINA ETAHAM

Efarina Etaham Hospital provides Covid-19 vaccination services for the community. One of the factors that influence people not to vaccinate is the lack of knowledge or education about the vaccination process. This is proven by the fact that there are still many people in the Efarina Etaham Hospital environment who have not carried out vaccinations. For this reason, this research will provide solutions to solve these problems by utilizing technology. The need for education regarding the importance of vaccination will be poured into applications based on augmented reality. This application will display vaccine introduction, information on the Covid-19 vaccine, and how the vaccine works in the human body

Pengaruh Perhatian Orang Tua terhadap Kedisiplinan Belajar Matematika

The purpose of this study was to determine the significant influence of parental attention on the discipline of learning mathematics. The hypothesis in this study is "There is a significant influence of parental attention on the discipline of learning mathematics. This type of research is correlation research. The population is 54 people and the sample used is the entire population of class VIII MTsN 7 Fifty Cities for the 2021/2022 academic year. The instrument used is the angle to determine the attention of parents and learning discipline. The statistical analysis technique used is Regression Analysis. The results of this study obtained a correlation value of rxy = 0.98 and a coefficient of determination of 95.06% from changing the hypothesis, for the significant influence of parental attention on the discipline of learning mathematics for class VIII MTsN 7 Fifty Kota obtained zcount = 3.37 and ztable=1.96 at 0.05 confidence. If Fcount > Ftable, then the research hypothesis is accepted. This means that there is an influence indicating parental attention to the discipline of learning mathematics in class VIII MTsN 7 Fifty Kota

Penerapan Model Pembelajaran Quantum Learning untuk Meningkatkan Minat dan Hasil Belajar Matematika Siswa

Penelitian ini dilatarbelakangi dari hasil observasi di kelas XI SMKN 4 Payakumbuh. Terlihat pembelajaran masih terpusat pada guru, siswa relatif pasif dan hasil belajar siswa cenderung rendah. Hal ini terlihat dari nilai ujian tengah semester matematika yang diperoleh oleh siswa kelas XI SMKN 4 Payakumbuhmasih banyak dibawah KKM yaitu 75. Hal tersebut diduga dipengaruhi oleh model pembelajaran yang digunakan guru kurang mampu memaksimalkan belajar siswa. Untuk mengatasi masalah tersebut, peneliti melakukan penelitian bagaimana minat siswa dengan menggunakan model Quantum Learning. Jenis penelitian ini adalah pra-eksperimen dengan rencana penelitian The Static  Group Comparison Design. Populasi dalam penelitian ini adalah selurus siswa kelas XI SMKN 4 Payakumbuh. Pengambilan sampel dilakukan secara acak. Sampel pada penelitian ini adalah siswa kelas XI RPL 1 sebagai kelas eksperimen dan siswa kelas XI RPL 2 sebagai kelas control. Data penelitian minat belajar siswa  ini diperoleh dari angket dan hasil belajar diperoleh dari tes akhir. Hasil penelitian menunjukkan bahwa minat belajar matematika siswa di kelas XI SMKN 4 Payakumbuh yang mengikuti pembelajaran dengan model Quantum Learning sebesar 64,45% dengan kriteria aktif. Hasil belajar matematika siswa diolah menggunakan uji-t, diperoleh hasil thitung=  dan ttabel = 1,68 karena thitung > ttabel  berarti tolak dan terima  pada taraf nyata ? = 0,05 , serta dengan menggunakan minitab diperoleh  = 0,000 yang artinya  ? ? dengan ? = 0,05. Jadi dapat disimpulkan bahwa hasil belajar matematika siswa yang mengikuti model Quantum Learning lebih baik daripada siswa yang mengikuti model pembelajaran konvensional

Estimation des changements de la ligne de rivage de la zone côtière sablonneuse de Kénitra au Maroc

Les plages du littoral de Kénitra ont connu des modifications au cours de ces quatre dernières décennies. La mise en valeur économique de certaines plages par des aménagements touristiques et l’extraction massive de sables pour les travaux d’aménagements urbains sont à l’origine d’une déstabilisation des échanges transversaux de sédiments. Ils sont accentués par la succession de périodes de sécheresse et par la multiplication de construction de barrages sur le bassin versant du Sebou. Le préambule à une meilleure gestion de ces plages est la compréhension de leur comportement passé vis-à-vis des contraintes naturelles et anthropiques. Cette démarche s’appuie essentiellement sur les missions aériennes de 1963 et de 1993. Le Modèle Numérique de Terrain (MNT), d’une précision de ± 10 cm en altitude issu de ces missions et le suivi du positionnement du trait de côte par un système d’analyse numérique (DSAS), ont permis d’estimer les taux de changement.Mots-clés : Littoral, basin versant de Sebou, Maroc, photographies aériennes,MNT, DSAS

Surgical strategy for purulent-septic complications of combat abdominal trauma

The incidence of combat abdominal trauma ranges from 6.7 to 9%. The nature of gunshot abdominal wounds leads to the development of functional disorders and complications (51–81%) and, as a result, a high mortality rate (12–31%). The purpose of the work is to improve the effectiveness of surgical treatment of purulent-septic complications in wounded patients with combat abdominal trauma (CAT). We analysed the treatment of 86 wounded patients with purulent-septic complications of CAT who were hospitalized at the Military Medical Clinical Centre of the Southern Region. Taking into account the location, clinical manifestations and severity of the injury, modern methods of treatment were used, namely: puncture-drainage interventions under ultrasound guidance and the NPWT system installation. The complex treatment was supplemented with antibacterial therapy and oxygen barotherapy. First of all, the wounded patients underwent US-guided puncture, drainage interventions and stage debridement for diagnostic and therapeutic purposes. NPWT therapy was used in 11 patients with large wounds and purulent-septic complications of the soft tissues of the anterior abdominal wall. So, the use of interventional ultrasound as a priority diagnostic and therapeutic method for purulent and inflammatory complications of combat abdominal trauma improved the quality of diagnosis and reduced the number of traumatic interventions, which led to a decrease in postoperative complications and the duration of inpatient treatment. 11 (14.2%) cases of puncture-drainage interventions were ineffective, and therefore it was necessary to use traditional methods of treatment — opening and draining purulent-inflammatory foci and using NPWT therapy. Vacuum therapy is an effective method of treating purulent-septic complications of gunshot wounds of the abdominal soft tissues, which, in combination with puncture-drainage interventions, can 2.5 folds reduce the number of recurrent operations (mainly multistage surgical procedures), thereby 1.8 folds reducing the length of hospital stay. The use of current methods has improved the results of surgical treatment of purulent-septic complications in wounded patients with purulent-septic complications of combat abdominal trauma. The use of the current techniques helped to reduce the number of invasive treatment methods, facilitated recovery, reduced bed days, reduced intoxication, and increased the percentage of recovered military personnel

Hubungan Game Online dengan Kemampuan Berpikir Kritis Matematis Siswa Kelas VIII SMP

This research was motivated by author's observation at SMP N 1 Ampek Angkek where some of the students was a game players. Although they were played game online, they still got good grades in their school.This study aims to determine the relationship of online games with students' mathematical critical thinking skills held at SMP N 1 Ampek Angkek. This research is a quantitative research with the type of research used is relationship research. The independent variable in this study is online games and the dependent variable is students' critical thinking abilities. The population in this study amounted to 114 students, while the sampling was done by random sampling of 29 students. Based on the results of the research that the researchers did obtained the value of the Pearson Product Moment relationship, r(count) = 0.068 with 0.05 significance level. So that based on the interpretation of the coefficient relationship r value is between 0.00 <0.068 <0.199, the relationship between the two variables (online games with critical thinking skills) is very low. Based on the significance test obtained sig = 0.728. Because the value of sig = 0.728> α = 0.05, it can be concluded that there is correlationship but not significant between online games with mathematical critical thinking skills at SMP N 1 Ampek Angkek

ACIDE FOLIQUE (VITAMINE B9) ET GROSSESSE

Folic acid or vitamin B9 is a micronutrient important for the human body. The aim of this development is to clarify roles and the interests of pregnancy supplementation in this nutrient. Folic acid is involved in the production of cells in the body. The abnormal closure of neural tube are serious malformations witch occur more often in children of women with epilepsy treated with anti-epileptic drugs during their pregnancy. The requirement of folic acid (AF) was proposed in prevention because of the probable responsibility of a lack of this nutriment. Folate deficiency can result from inadequate food intake, increased needs during pregnancy or in women with epilepsy, taking anti-epileptic Supplementation pregnancy is necessary in case of non-contribution or disorder absorption or metabolism.L'acide folique ou vitamine B9 est un micronutriment important pour l'organisme. Le but de cette mise au point est de préciser ses rôles ainsi que l'intérêt d'une supplémentation gravidique en ce nutriment. L'acide folique intervient dans la production des cellules de l'organisme.Les anomalies de fermeture du tube neural sont des malformations graves qui se rencontrent plus souvent chez les enfants issus de femmes épileptiques traitées par anti-épileptiques pendant leur grossesse. La prescription d'acide folique (AF) est proposée en prévention en raison de la responsabilité probable d'une carence en ce nutriment. Les carences en folates peuvent résulter d'une insuffisance d'apport alimentaire, d'une augmentation des besoins pendant la grossesse, ou chez la femme épileptique, de la prise de médicaments anti-épileptiquesLa supplémentation gravidique est nécessaire en cas de défaut d'apport ou trouble de son absorption ou de son métabolisme