ANALISIS KEMAMPUAN PENALARAN MATEMATIS SISWA KELAS V SEKOLAH DASAR DI DESA SUKOLILO PATI TERHADAP PENGERJAAN SOAL BERBASIS PEMBUKTIAN

Mathematical reasoning ability is one of the basic abilities that students need to have in the process of solving mathematical problems both in learning and in daily activities. This research was conducted to find out and analyze the reasoning abilities of elementary school students in working on proof-based math problems. The methodology used is quantitative based by giving question sheets to fifth grade students which are then analyzed how the results of the answers that have been answered by several students. From the questions that have been done by 10 students of class V, the results obtained with the criteria (very good) are obtained by 2 students, (good) are obtained by 3 students, (enough) are obtained by 3 students, (poor) are obtained by 2 students. Based on these results it is concluded that the reasoning ability of the class V on evidence-based questions in the village of Sukolilo Pati has quite good reasoning abilities

Isolation and identification of cellulolytic fungi under Swietenia macrophylla, Mimusops elengi, and Polyalthia longifolia stands at the Universitas Sumatera Utara campus, Indonesia

The Universitas Sumatera Utara has various types of trees scattered in the surrounding environment. Swietenia macrophylla, Mimusops elengi and Polyalthia longifolia are the three most common tree species found on campus. To maximize the potential for utilizing tree species on the Universitas Sumatera Utara campus, several efforts can be made, one of which is by exploring the presence of cellulolytic fungi. Cellulolytic fungi are fungi that are able to hydrolyze cellulose which can produce cellulase enzymes. This study aims to obtain the potential and identify cellulolytic fungi from the soil under Swietenia macrophylla, Mimusops elengi and Polyalthia longifolia stands. Sampling was taken by making 3 plots on each type of stand measuring 20 m x 20 m with a soil depth of 0 – 20 cm. In each plot, 5 sampling points were made. The soil taken from each type is then composed. Isolation of cellulolytic fungi was carried out using Carboxy Methyl Cellulose (CMC) media. The potenstial of cellulolytic fungi is obtain by calculating the cellulolytic index. All isolates obtained were identified morphologically down to the genus level. The result showed that the potency of the cellulolytic fungi ranged from 0.05 to 1.36. The identification results that the isolates included the genus Aspergillus and Trichoderma

Significance of high sensitivity C-reactive protein and D-dimer in evaluating intracardiac thrombus and spontaneous echo contrast in patients referred for transesophageal echocardiography: A prospective study

Background: Intra-cardiac thrombus (ICT) and spontaneous echo contrast (SEC) are considered hypercoagulable and inflammatory conditions. We aimed to determine if high sensitivity C-reactive protein (CRP) and D-dimer (DD), in combination with variables of lower thrombotic risk (normal ejection fraction [NEF], sinus rhythm [NSR]), may predict the absence of ICT/SEC. Methods and Results: Consecutive patients referred for transesophageal echocardiogram (TEE) for evaluation of cardioembolic source were prospectively enrolled. CRP and DD levels were determined at the time of TEE. 124 patients were enrolled, of whom 21 had ICT/SEC. The combination of NSR/NEF had a negative predictive value (NPV) of 98.6% for absence of ICT/SEC. The NPVs of CRP and DD were 93.6% and 85%, respectively. Adding either CRP or DD to NSR/NEF combination increased the NPV to 100%. Log CRP was significantly associated with ICT/SEC. Conclusions: The presence of NSR and NEF may defer the need for TEE for ICT/SEC evaluation. CRP association with ICT/SEC suggests that inflammation plays a role in ICT/SEC formation. Whether CRP and DD should become routine in the triage process of TEE for ICT/SEC evaluation requires further large scale prospective studies

Pengelolaan Hama Dan Penyakit Terpadu Tanaman Cabai (Capsicum frustences L.) Di Desa Becirongengor Kecamatan Wonoayu Kabupaten Sidoarjo

Cayenne pepper is one of the strategic horticultural commodities in Indonesia. Crop disruption will have an impact on an imbalance between demand and supply which causes price fluctuations at the consumer level which often causes social turmoil in society. One form of disturbance in chili production is successfull in managing pests and diseases in its cultivation activities. This study aims to describe pests and pathogens that cause endemic cayenne pepper (Capsicum frustences L.) and their management through a case study in Bencirong Village, Wonoayu District, Sidoarjo Regency which focuses on the application of monitoring techniques, agronomic techniques, utilization of vegetable pesticides, and agency applications. integrated Trichoderma biocontrol. The research method used is the approach of observation and interviews with resource persons, application of pest and disease control that is integrated into activities with resource persons in the field, laboratory observations as support, and literature review of various scientific sources and publications. The results of collecting data and information on the implemented approach methods are interpreted and analyzed to then draw conclusions that are oriented towards determining strategies, planning, and implementing pest and disease control. This research was conducted from April 1 to June 30, 2021, in Becirongengor Village, Wonoayu District, Sidoarjo Regency. The results showed that pest organisms such as trips and whitefly as well as pathogens that cause fusarium wilt and anthracnose fruit rot were endemically responsible for the decrease in cayenne pepper production. Pest and disease management technology that is feasible to be applied is the integration of monitoring applications, healthy agronomic techniques, vegetable pesticides, and Trichoderma biological agents. [Cabe rawit adalah salah satu komoditas hortikuktur yang strategis di Indonesia. Gangguan panen akan berdampak pada ketidak-seimbangan antara demand dan supplay yang menyebabkan fluktuasi harga di tingkat konsumen yang sering menimbulkan gejolak social dalam masyarakat. Salah satu bentuk gangguan dalam produksi cabe adalah keberhasilan dalam pengelolaan hama dan penyakit dalam kegitan budidayanya. Penelitian bertujuan mendiskripsikan hama dan patogen penyebab penyakit tanaman cabe rawit (Capsicum frustences L.) endemis dan pengelolaannnya melalui studi kasus di Desa Bencirong, Kecamatan Wonoayu, Kabupaten Sidoarjo yang menitik beratkan pada aplikasi teknik monitoring, teknik agronomis, pemanfaatan pestisida nabati, dan aplikasi agensia biokontrol Trichoderma secara terpadu. Metode penelitian yang digunakan adalah pendekatan observasi dan wawancara dengan narasumber, aplikasi pengendalia hama dan penyakit yang diintegrasikan dalam kegiatan bersama narasumber di lapang, pengamatan laboratrium sebagai pendukung, dan kajian pustaka berbagai sumber ilmiah dan hasil publikasi. Hasil pengumpulan data dan informasi atas metode pendekatan yang diimplementasikan diintepretasikan dan dianalisis untuk kemudian dilakukan penarikan kesimpulan yang berorietasi pada penentuan strategi, perencanaan, dan implementasi pengendalian hama dan penyakit. Penelitian ini dilakukan pada 1 April hingga 30 Juni 2021 di Desa Becirongengor Kecamatan Wonoayu Kabupaten Sidoarjo. Hasil penelitian menunjukkan organisme pengganggu berupa hama trips dan kutu kebul serta patogen penyebab penyakit layu fusarium dan busuk buah antraknose secara endemis bertanggungjawab terhadap penurunan produksi cabe rawit. Teknologi pengelolaan hama dan penyakit yang layak diaplikasikan adalah integrasi antara aplikasi monitoring, teknik agronomi yang sehat, pestisida nabati, dan agensia hayati Trichoderma

Pembentukan Portofolio Saham Optimal Pasca 1 Tahun Pandemi Covid 19

AbstrakPenelitian ini menggunakan populasi saham IDXQ 30 berjumlah 30 perusahaan. Sampel dari penelitian diambil berdasarkan nilai return positif sebanyak 18 perusahaan. Berikutnya terpilih 5 perusahaan dengan peringkat return paling tinggi yaitu perusahaan dengan kode PWON, BBCA, INTP, CPIN, dan BJTM. Hasil pembentukan portofolio optimal pasca 1 tahun pandemi covid 2019 dengan menggunakan metode Markowitzperusahaan dengan kode BJTM terpilih menjadi kandidat yang mampu memenuhi kriteria investasi. Dengan nilai return sebesar 0,52 %, nilai variansi portofolio sebesar 0,18 %, Nilai Expected return sebesar 1,23 % dan nilai resiko sebesar 4,35 % serta Koefisien Korelasi sebesar 0,20 %. Peringkat ke 2 perusahaan dengan kode CPIN dengan nilai return sebesar 13,31 %, nilai variansi portofolio sebesar 0,20 %, Nilai Expected return sebesar 1,26 % dan nilai resiko sebesar 4,47 % serta Koefisien Korelasi sebesar 126,63 %. Peringkat ke tiga perusahaan kode BBCA return sebesar 14,56 %, nilai variansi portofolio sebesar 0,20 %, Nilai Expected return sebesar 1,26 % dan nilai resiko sebesar 4,48 % serta Koefisien Korelasi sebesar 148,70 %. Peringkat ke empat adalah perusahaan dengan kode INTP return sebesar 14,54 %, nilai variansi portofolio sebesar 0,20 %, Nilai Expected return sebesar 1,26 % dan nilai resiko sebesar 4,47 % serta Koefisien Korelasi sebesar 152,03 %Peringkat ke lima perusahaan dengan kode PWON return sebesar 14,97 %, nilai variansi portofolio sebesar 0,20 %, Nilai Expected return sebesar 1,26 % dan nilai resiko sebesar 4,48 % serta Koefisien Korelasi sebesar 153,73 %. Kata Kunci: model Markowitz, saham optima

The Comparison of Physician to Computer Interpreted Electrocardiograms on ST-elevation Myocardial Infarction Door-to-balloon Times.

OBJECTIVE: The purpose of the project was to study the impact that immediate physician electrocardiogram (ECG) interpretation would have on door-to-balloon times in ST-elevation myocardial infarction (STEMI) as compared with computer-interpreted ECGs. METHODS: This was a retrospective cohort study of 340 consecutive patients from September 2003 to December 2009 with STEMI who underwent emergent cardiac catheterization and percutaneous coronary intervention. Patients were stratified into 2 groups based on the computer-interpreted ECG interpretation: those with acute myocardial infarction identified by the computer interpretation and those not identified as acute myocardial infarction. Patients (n = 173) from September 2003 to June 2006 had their initial ECG reviewed by the triage nurse, while patients from July 2006 to December 2009 (n = 167) had their ECG reviewed by the emergency department physician within 10 minutes. Times for catheterization laboratory activation and percutaneous coronary intervention were recorded in all patients. RESULTS: Of the 340 patients with confirmed STEMI, 102 (30%) patients were not identified by computer interpretation. Comparing the prior protocol of computer ECG to physician interpretation, the latter resulted in significant improvements in median catheterization laboratory activation time {19 minutes [interquartile range (IQR): 10-37] vs. 16 minutes [IQR: 8-29]; P \u3c 0.029} and in median door-to-balloon time [113 minutes (IQR: 86-143) vs. 85 minutes (IQR: 62-106); P \u3c 0.001]. CONCLUSION: The computer-interpreted ECG failed to identify a significant number of patients with STEMI. The immediate review of ECGs by an emergency physician led to faster activation of the catheterization laboratory, and door-to-balloon times in patients with STEMI

The Comparison of Physician to Computer Interpreted Electrocardiograms on ST-elevation Myocardial Infarction Door-to-balloon Times

OBJECTIVE: The purpose of the project was to study the impact that immediate physician electrocardiogram (ECG) interpretation would have on door-to-balloon times in ST-elevation myocardial infarction (STEMI) as compared with computer-interpreted ECGs. METHODS: This was a retrospective cohort study of 340 consecutive patients from September 2003 to December 2009 with STEMI who underwent emergent cardiac catheterization and percutaneous coronary intervention. Patients were stratified into 2 groups based on the computer-interpreted ECG interpretation: those with acute myocardial infarction identified by the computer interpretation and those not identified as acute myocardial infarction. Patients (n = 173) from September 2003 to June 2006 had their initial ECG reviewed by the triage nurse, while patients from July 2006 to December 2009 (n = 167) had their ECG reviewed by the emergency department physician within 10 minutes. Times for catheterization laboratory activation and percutaneous coronary intervention were recorded in all patients. RESULTS: Of the 340 patients with confirmed STEMI, 102 (30%) patients were not identified by computer interpretation. Comparing the prior protocol of computer ECG to physician interpretation, the latter resulted in significant improvements in median catheterization laboratory activation time {19 minutes [interquartile range (IQR): 10-37] vs. 16 minutes [IQR: 8-29]; P \u3c 0.029} and in median door-to-balloon time [113 minutes (IQR: 86-143) vs. 85 minutes (IQR: 62-106); P \u3c 0.001]. CONCLUSION: The computer-interpreted ECG failed to identify a significant number of patients with STEMI. The immediate review of ECGs by an emergency physician led to faster activation of the catheterization laboratory, and door-to-balloon times in patients with STEMI

The Comparison of Physician to Computer Interpreted Electrocardiograms on ST-elevation Myocardial Infarction Door-to-balloon Times

OBJECTIVE: The purpose of the project was to study the impact that immediate physician electrocardiogram (ECG) interpretation would have on door-to-balloon times in ST-elevation myocardial infarction (STEMI) as compared with computer-interpreted ECGs. METHODS: This was a retrospective cohort study of 340 consecutive patients from September 2003 to December 2009 with STEMI who underwent emergent cardiac catheterization and percutaneous coronary intervention. Patients were stratified into 2 groups based on the computer-interpreted ECG interpretation: those with acute myocardial infarction identified by the computer interpretation and those not identified as acute myocardial infarction. Patients (n = 173) from September 2003 to June 2006 had their initial ECG reviewed by the triage nurse, while patients from July 2006 to December 2009 (n = 167) had their ECG reviewed by the emergency department physician within 10 minutes. Times for catheterization laboratory activation and percutaneous coronary intervention were recorded in all patients. RESULTS: Of the 340 patients with confirmed STEMI, 102 (30%) patients were not identified by computer interpretation. Comparing the prior protocol of computer ECG to physician interpretation, the latter resulted in significant improvements in median catheterization laboratory activation time {19 minutes [interquartile range (IQR): 10-37] vs. 16 minutes [IQR: 8-29]; P \u3c 0.029} and in median door-to-balloon time [113 minutes (IQR: 86-143) vs. 85 minutes (IQR: 62-106); P \u3c 0.001]. CONCLUSION: The computer-interpreted ECG failed to identify a significant number of patients with STEMI. The immediate review of ECGs by an emergency physician led to faster activation of the catheterization laboratory, and door-to-balloon times in patients with STEMI

Chemical, Physical, and Mechanical Properties of Belangke Bamboo (Gigantochloa pruriens) and Its Application as a Reinforcing Material in Particleboard Manufacturing

This study aimed to analyze the basic properties (chemical composition and physical and mechanical properties) of belangke bamboo (Gigantochloa pruriens) and its potential as a particleboard reinforcement material, aimed at increasing the mechanical properties of the boards. The chemical composition was determined by Fourier transform near infrared (NIR) analysis and X-ray diffraction (XRD) analysis. The physical and mechanical properties of bamboo were evaluated following the Japanese standard JIS A 5908 (2003) and the ISO 22157:2004 standard, respectively. The results showed that this bamboo had average lignin, holocellulose, and alpha-cellulose content of 29.78%, 65.13%, and 41.48%, respectively, with a degree of crystallinity of 33.54%. The physical properties of bamboo, including specific gravity, inner and outer diameter shrinkage, and linear shrinkage, were 0.59%, 2.18%, 2.26%, and 0.18%, respectively. Meanwhile, bamboo’s mechanical properties, including compressive strength, shear strength, and tensile strength, were 42.19 MPa, 7.63 MPa, and 163.8 MPa, respectively. Markedly, the addition of belangke bamboo strands as a reinforcing material (surface coating) in particleboards significantly improved the mechanical properties of the boards, increasing the modulus of elasticity (MOE) and bending strength (MOR) values of the fabricated composites by 16 and 3 times