bluuebunny/crossref_metadata_2025 huggingface dataset:
Association of serum zinc and vitamin E levels with Acne vulgarisin Bangladeshi acne patients
Authors: Sultana Tania , Akter Aklima , Zohra Fatima Tuz , Rahman Md Quddusur , Kabir Yearul
Published: July 2021

The serum level of zinc and vitamin E were measured to understand the association of various nutrients on acne pathogenesis. Both zinc and vitamin E are antioxidants used as a supplement in acne treatment. However, their effect and status in acne patients are not fully understood. This study included 48 acne patients and 48 sex- and age-matched healthy controls. The zinc and vitamin E concentration was measured in the serum by flame atomic absorption spectroscopy (AAS) and HPLC methods. Compared to the healthy control, a significant deficiency of serum vitamin E level in acne patients (p<0.001) was found, although the patients were not deficient in serum zinc level (p=0.22). In addition, female acne patients had a slightly lower zinc level than male patients (p=0.06). The low serum vitamin E level suggests that supplementation of vitamin E might be helpful in acne treatment. However, further studies are required to understand the dose and mechanism of vitamin E supplements in acne treatment.

J. Bangladesh Acad. Sci. 45(1); 49-58: June 2021
On some properties of the Diophantine equations a2 = b2 ± bc +c2
Authors: Majumdar Abdullah Al Kafi
Published: July 2021

This paper gives some properties related to the Diophantine equations a2 = b2 ± bc +c2. It has been shown that, in some cases, each of the two Diophantine equations has multiple solutions. The formulas for multiple solutions are derived.

J. Bangladesh Acad. Sci. 45(1); 123-125: June 2021
Late Professor Syed Nurun Nabi
Authors: Rahman M Muhibur
Published: July 2021

Abstract Not Available

J. Bangladesh Acad. Sci. 45(1); ii: June 2021
Implementasi Teknik Behavior Contract untuk Memotivasi Siswa dalam Penyelesaian Pekerjaan Rumah (PR) di Madrasah Tsanawiyah Negeri (MTsN) Pilangkenceng Madiun
Authors: Chalimi Muchammad Kahfi
Published: July 2021

Penggunaan metode pembelajaran yang tepat untuk meningkatkan mutu pembelajran harus terus ditingkatkan. Di samping itu pendampingan kepada siswa juga perlu dilakukan untuk mengarahkan siswa agar tercapai tujuan belajarnya. Behavioral Contract (Kontrak Perilaku) adalah salah satu teknik pembelajaran pendekatan konseling terapi behavioral yang dapat digunakan untuk membantu menyelesaikan permasalahan perilaku maladaptif pada diri klien/konseli yang berkeinginan merubah perilaku tersebut menjadi lebih baik. Untuk mendalami teknik ini perlu diadakan penelitian.

Permasalahn yang diajukan dalam penelitianini meliputi :1) bagaimana implementasi teknik behavior contract untuk memotivasisiswa dalam penyelesai an PR. 2) bagaimana Hasil implementasi teknik behavior contract untuk memotivasi siswa dalam penyelesaian PR di MTsN Pilangkenceng Madiun .

Jenis penelitian yang dipilih adalah deskriptif kualitatif, adapun informan penelitiannya adalah kepala sekolah, guru bimbingan konseling, dan siswa. Dan tehnik pengumpulan data melalui observasi, wawancara dan dokumentasi.

Hasil penelitian menjelaskan, bahwa 1)  implementasi teknis behavior contract ini ada beberapa tahap pelaksanaanya. Pertama konselor mengawali pertemuan dengan konseli untuk membentuk keakraban, dengan maksud agar tidak terjadi ketakutan atau kekakuan oleh konseli karena paradigma konseli setiap yang berhubungan dengan BK adalah menyeramkan. Keduda, menentukan data awal yakni tingkah laku dari konseli yang mana yang akan dirubah, dan dilanjut proses pembuatan kontrak antara konselor dengan konseli. Ketiga, konselor menetapkan jenis penguatan serta yang akan diterapkan setiap kali tingkah laku yang diinginkan ditampilkan oleh konseli, pemberian penguatan maupun reward kepada konseli diberikan sesering mungkin agar konseli semakin termotivasi. 2) Sementara hasil dari teknik behavior contract untuk memotivasi siswa dalam menyelesaikan PR siswa MTsN Pilangkenceng Madiun sudah cukup baik. Hasil dari proses konseling tersebut menyatakan bahwa kedua konseli itu menghasilkan berubahan perilaku yang cukup baik
PENENTUAN KESETIMBANGAN, TERMODINAMIKA DAN KINETIKA ADSORPSI ARANG AKTIF TEMPURUNG KELAPA SAWIT PADA ZAT WARNA REACTIVE RED DAN DIRECT BLUE
Authors: Sari Rensy Aula , Firdaus M. Lutfi , Elvia Rina
Published: July 2021

This perpose of this research was to know the isotherm, kinetics and thermodynamics adsorption of synthetic  dye onto activated carcoal from palm oil shell. The synthetic dye were Reactive Red and Direct Blue. The model of isotherm were Langmuir and Freundlich, kinetics adsorption tested were Pseudo orde-1 and Pseudo orde-2, and also thermodynamics were free energy change (?Go), enthalpy change (?Ho), and entropy change (?So). The dominant isotherm adsorption was isotherm Freundlich, kinetic adsorption Pseudo 2 th order  with the value (?So), (?Go) and (?Ho), Reactive Red were 0,0028 Kj/mol.K , -3,93 Kj/mol, and -36,12 Kj/mol respectively. Whereas in direct blue were 0,0034 Kj/mol.K, -1,67 Kj/mol,and -30,16 Kj/mol respectively.
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA CALL CARD DAN TRUTH AND DARE
Authors: Meilan Wise , Rohiat Salastri , Amir Hermansyah
Published: July 2021

This study aimed to compare the learning outcomes of students with using cooperative learning type Team Games Tournament (TGT) with media Call Card and Truth and Dare in SMA Negeri 05 Bengkulu Tengah. This research is quasy experimental with population all grade students in SMA Negeri 05 Bengkulu Tengah and the sample is X3 class as experiment class 1which implement instructional media truth and dare and X1 class  as experiment class 2 which implement instructional media Call Card. Students learning outcomes in this research extend from the difference of pretest and posttest value. In the experimental class 1 average value of students learning outcomes 69,46 while the experimental class 2 at 58,21. Through a series of statistical test done hypothesis testing using t test (0,01) was obtained t =3,13 and t table =2,39. The results of data analysis showed that shere were significant differences in student learning result between the aplication of instructional media Truth and Dare with media Call Card in hydrocarbon compound material in X grade SMA Negeri 05 Bengkulu Tengah. This can be showed t test that has been done on student learning outcomes for cognitife aspect got the result that value t table < t. The obtained t = 3,133 mean while t table = 2,397.
PERBANDINGAN HASIL BELAJAR SISWA MENGGUNAKAN MEDIA CHEMOPOLY GAME DAN TOURNAMENT QUESTION CARDS
Authors: Viani Dui Sherly , Bahar Amrul , Elvinawati Elvinawati
Published: July 2021

The low learning outcomes of the students is because in the learning process of teacher and student interaction only goes one way. Teachers often use lecture methods so that students tend to only accept what is given. This can make the students' motivation and activeness in following the lesson to be low. Therefore, researchers try to vary the cooperative learning model using Chemopoly Game media and Tournament Question Cards. This is quasi experimental research with population class X MIPA in SMAN 2 Kota Bengkulu and sample is class X MIPA C using media Tournament Question Cards and class X MIPA D using Chemopoly Game media. Data analysis used were mean score, normality test, homogeneity test, and t test. The average posttest grade of experiment I is 85,59 While for experiment class II is 79,38. Then t test and obtained tcount> ttable (2.62> 2.38). The results of this study indicate that there is a significant difference between student learning outcomes using Chemopoly Game media and Tournament Question Cards on basic chemical law materials.
PERBANDINGAN PENERAPAN MODEL PEMBELAJARAN LEARNING CYCLE (5E) DAN TWO STAY TWO STRAY
Authors: Gayatri Erva Rosa Prima , Bahar Amrul , Handayani Dewi
Published: July 2021

The purpose of this research is to know the difference of students' chemistry learning result between experiment 1 class which applied learning cycle model (5E) with experiment 2 class that apply two stay two stray learning model on acid acid base material in class XI IPA in SMA Plus Negeri 7 Bengkulu City. Research conducted is a research with the type of quasi experiment. Chemical learning result data obtained from pretest value and posttest value where the average value of improvement of cognitive learning result for experiment class 1 is 47,78. And the average value of cognitive learning improvement for experiment class 2 is 54.875. With  testing the hypothesis using t test with significant level (? = 0,01), then got value for titung equal to 2,60 and for ttable got value equal to 2,380. The results showed that there were significant differences in learning outcomes between classes that applied learning cycle model (5E) with classes that applied the two stay two stray learning model.
AKTIVITAS ANTIOKSIDAN METABOLIT SEKUNDER BAKTERI ENDOFIT AKAR TANAMAN Moringa oleifera L (Kelor)
Authors: Kuntari Zeta , Sumpono Sumpono , Nurhamidah Nurhamidah
Published: July 2021

[ANTIOXIDANT ACTIVITY OF SECONDARY METABOLITE FROM ENDOFIT BACTERIA OF  Moringa oleifera L (KELOR) ROOTS]  The purpose of this research was aims to isolate and measure the ability of antioxidant activity from secondary metabolites produced by endophytic bacteria that grow in the live tissue root  of Moringa oleifera L. (kelor). Endophytic bacteria were purified and cultured using a solid  Murashige-skoog (MS)  medium for 3 days at room temperature. Secondary metabolites were obtained by centrifugation process at a rate of 3000 rpm for 20 minutes. The bacterial fermentation process  using  Nutrient Broth  (NB) medium for 72 hours with a shaker speed at 170 rpm . The suspension supernatant was extracted with a maceration method using 86% ethyl acetate, followed by vacuum rotary evaporator concentration at 40 ° C. The extract antioxidant activity test  was performed using the DPPH (1,1-diphenyl-2-picrylhydrazyl) method using a UV-Vis spectrophotometer at 517 nm wavelength and ascorbic acid as standard. The result of DPPH test showed that the antioxidant activity of ethyl acetate extract of endophytic bacterial from root of M. oleifera L root has IC50 value at  315, 396 ppm.  Based on these results, it can be concluded that the secondary metabolite extract of endophytic bacterial from M. oleifera L root classified as weak antioxidant (IC50> 250 ppm).
STUDI PERBANDINGAN PEMBELAJARAN KOOPERATIF MENGGUNAKAN MEDIA CHEMICAL DOMINO CARD DAN FLASH CARD
Authors: Gusti Nina , Bahar Amrul , Handayani Dewi
Published: July 2021

[COMPARISON STUDY OF COOPERATIVE LEARNING USING CHEMICAL DOMINO CARD AND FLASH CARD MEDIA] This study aims to measure differences in the results of chemistry learning between experimental class 1 classes that apply Chemical Domino Card learning media with experimental class 2 that apply Flash Card media at nomenclature of chemical compounds topics in class X IPA SMA Negeri 2 Kota Bengkulu at 2016 / 2017 academic year. Use of these two learning media is considered from the practicality, advantages, and effectivenes  The type of research is a quasi experimental research with the population of all students of class X MIPA in SMA Negeri 2 Kota Bengkulu at 2016/2017 academic year , which a sample class  is X MIPA E and X MIPA F. Implementation of research conducted by using two experimental class, X MIPA E which uses Chemical Domino Card media and class X MIPA F using Flash Card media. Data analysis used are  mean value, homogeneity test, normality test and t test. The average value of posttest experimental class I for first and second meeting is 77,5 and 79,72, while for experiment class II is 86,94 and 88,61. Then t test is done by using difference of pretest and posttest value of student, which is obtained that both at first meeting and second t count> t table that is 2,44> 2,38081 (first meeting) and 2,81> 2,38081 (second meeting ). The results of this study indicate that there is a significant difference of student learning outcomes using Chemical Domino Card and Flash Card media on the nomenclature of chemical compounds
MENGGUNAKAN MEDIA INTERNET DOCS.GOOGLE PADA POKOK BAHASAN REAKSI REDOKS KELAS X IPA DI SMAN 4 KOTA BENGKULU
Authors: Parade Aang , Handayani Dewi , Sumpono Sumpono
Published: July 2021

[USING THE DOCS. GOOGLE INTERNET MEDIA ON THE REDOX REACTION  SUBJECT IN CLASS X IPA SMAN 4 BENGKULU CITY  ] This research aims to know the results of learning: students in the class who are not given the preparation of learning at home, knowing the results of the teaching of students in a given grade of preparatory study at home using internet media, knowing the Docs. Google the difference in the results of student learning in the classroom are not given preparation home study with the results of a survey of students in a provided a homework preparatory sign Docs. Google internet media. The methods used in this research was quasi-experimental research is the entire population with grade X IPA SMAN 4 city of Bengkulu, Sample research, i.e., class experiments and classroom control. The results of the study in this research result of students pretest and posttest. Based on the results of the research conducted in mind that there is a significant difference between the results from student learning in the classroom are not given preparation home study with the results of a survey of students in a given a homework preparation home study using internet media Docs. Google via t-tests using SPSS 16 program. The learning outcomes of students in a given grade of preparatory education at home using Google Docs. Indicates the average rating of 77.0 while learning results of students in the class who are not given a homework preliminary with the average value of 68.6. Student Learning Outcomes in a given class homework preparation using Docs. Google may provide better results on the subject of redox reactions.
AKTIVITAS FRAKSI ETANOL DARI EKSTRAK DAUN Peronema canescens TERHADAP TINGKAT PERTUMBUHAN Plasmodium berghei
Authors: Prasiwi Dhea , Sundaryono Agus , Handayani Dewi
Published: July 2021

[THE ACTIVITY OF THE Peronema canescens LEAVES ETHANOL EXTRACTS FRACTION AGAINST Plasmodium berghei GROWTH RATE ] The purpose of this research was to identify the secondary metabolites of compounds contained in the fraction of ethanol from leaves of Peronema canescens (Sungkai) as well as to measure the level of activity of ethanol fraction antiplasmodium leaf P.canescens against the male mice (Mus musculus) infected with Plasmodium berghei which is parasitic hemaprotozoa that can cause malaria in rodents such as rats and mice as well as molecular similarity with the parasite Plasmodium. falciparum that causes malaria in humans. The methods used in this study i.e. in maceration extraction methods to attract secondary metabolite compounds from the leaves of P.canescens followed by oil bath method to get a fraction of ethanol with the purpose of separating polar compounds from a mixture of secondary metabolite compounds contained in the sample leaf P.canescens. Assay activity against antiplasmodium males mice infected with P. berghei is done by dividing into the 5 mice group treatment i.e. Group K (-) that are quads, group K (+) given kloroquin anti malarial drug, and P1, P2, P3, which each group was given a dose of ethanol fraction from leaves of P. canescens with each dose of 0.028 (P1); 0.056 (P2), and 0.0084 g/kgBB (P3).The results of research conducted showed that administering ethanol fraction from leaves of P. canescens antimalarial activity can increase with very real on the best dose of kg BB 0084 g i.e. with the percentage inhibition of 54.06%.
UJI AKTIVITAS ASAP CAIR CANGKANG BUAH KARET (Hevea brassiliensis) DAN APLIKASINYA DALAM PENGHAMBATAN KETENGIKAN DAGING SAPI
Authors: Putri Haulia Dwi , Sumpono Sumpono , Nurhamidah Nurhamidah
Published: July 2021

This research was aimed to know the degree of Fenol compound, total acid and the activity of liquid smoke of Rubber (Hevea brassiliensis) Seed Shell also the application in obstructing the rancidity of beef. The Fenol compound was determined by using Reagen Follon-Ciocalteu. The total acid was determined by using the method of titrated acids.The ability as the antioxidant was tested by DPPH method and the ability of obstructing the rancidity of beef was done by measuring the alteration of TBA value in beef as long as saved. The result was shown the fenol compound in liquid smoke of Rubber Seed Shell as much as 0,84 % and the acetic acid content was 4.725%. The antioxidant test was produced IC50 value as much as 101.27 ppm. According to the IC50 value which got from the test that the liquid smoke of Rubber Seed Shell were included in moderate category. The increment of the liquid smoke of Rubber Seed Shell were able to suppress the rancidity of beef during the storage time. It was marked by the decreasing of TBA value in beef as given in treatment A1 (liquid smoke 4% ) and A2 liquid smoke 6%. The treatment without the liquid smoke (A0) increased the TBA value from 0.05 mgMDA/Kg on day (0) to 0.615 mgMDA/Kg on day 6. The treatment of concentration liquid smoke 4% (A1)  increased  from  0.039  mgMDA/Kg  on  day  (0) to  0.395  mgMDA/Kg  on  day  6.  The  treatment  of concentration liquid smoke 6% (A2) increased from 0.031 mgMDA/Kg on day 0 to 0.209 mgMDA/Kg on day 6.
POTENSI SITOTOKSIK DAN ANTIBAKTERI EKSTRAK DAUN Laportea interrupta (L.) Chew (JELATANG AYAM) TERHADAP Staphylococcus aureus
Authors: Safitri Okti Mindi , Nurhamidah Nurhamidah , Amir Hermansyah
Published: July 2021

This research aims to determine the profile of phytochemicals, determine the level of cytotoxic extract toward the larva of Artemia salina Leach by using Brine Shrimp Lethality Test (BSLT) method, and to measure how much the activity of  antibacteria leaf ekstract of Laportea Interrupta (L.) Chew  (Jelatang Ayam )  toward the Staphylococcus aureus bacteria. The leaf of L. interrupta  (L.) Chew are dried and grinded well. The half of grinded sample are tested by phytochemical  profile and another one are ekstracted by using etanol liquid for three days then they are evaporated. The result of fitokimia leaf L. interrupta  (L.) Chew test contains secondary metabolite alkaloid,  tanin, terpenoid,  and saponin. The result of cytotoxic extract of leaf L. interrupta  (L.) Chew toward the A. salina Leach is obtained LC50 for 93,33 ppm, so, the L. interrupta  (L.) Chew is toxic because it is in the range of 31 ppm to 1000 ppm and it can be potentially as a anticancer agents. The eksract of Jelatang Ayam leaf can obstruct the growth of S. aureus, on 5 x 104 clear zone concentration that formed 9 mm being medium categorized. The more concentration of the Jelatang leaf ekstract then more its obstruction energy.
STUDI PERBANDINGAN KEMAMPUAN BERPIKIR KRITIS SISWA MENGGUNAKAN MODEL KOOPERATIF TIPE TAKE AND GIVE DAN THINK PAIR SQUARE DI KELAS XI IPA SMA NEGERI 1 REJANG LEBONG
Authors: Amalia Windy Novita , Amir Hermansyah , Sumpono Sumpono
Published: July 2021

The purpose of this research is to measure the difference of improvement of students' critical thinking ability by applying the cooperative model Take and give type with Think Pair Square type on salt hydrolysis material in grade XI IPA SMA Negeri 1 Rejang Lebong academic year 2017 / 2018. This study was conducted with a population of 201 students from 6 IPA classes and a sample of 68 students from 2 classes it class XI IPA 1 as experiment 1 and XI IPA 5 as experiment 2 which can be from normality and homogeneity test. The research is a kind of quasi experiment. Data analysis used is normality test, homogeneity test and hypothesis test. The students' critical thinking ability data is obtained from the pretest and posttest values at the beginning of the meeting and at the end of the meeting. This critical thinking skills test consists of 15 essay questions. The average increase in critical thinking skills for Take and give classes with Think Pair Square class is 44,757 and 51,683. By testing the hypothesis using t test with a significant level of 0.05, then obtained the value for t hitung> t table is 3.081> 1.668. The results showed that students' critical thinking skills  with the classes that apply the Think Pair Square learning model is better than the class that applied the Take and give learning model.
PROFIL FITOKIMIA DAN PENGARUH EKSTRAK TANGKAI DAUN TALAS KEMUMU (Colocasia gigantea Hook.f ) TERHADAP JUMLAH LEUKOSIT Mus musculus
Authors: Asri Rofiqa , Handayani Dewi , Sundaryono Agus
Published: July 2021

This research aims to identify secondary metabolite compounds in Talas kemumu leaf stalk (Colocasia gigantea Hook.f) and to determine the effect of extract on the number of male Mus musculus leukocytes that have been induced aspirin. Aspirin is used to increase the number of M.musculus leucocytes.The method used in this research is the method of extraction by maceration to attract secondary metabolites of active compounds  C.gigantea leaf stalk and the measurement of blood leukocyte counts are calculated using a hemocytometer (improved neubauer). Test of the effect of the leaf stalk of C.giganteaextract on the number leukocytes of M.musculus  was performed by dividing into 5 groups with 5 replications according to the Federer formula, namely K (-) were given distilled water, K (+) were given aspirin, P1, P2 and P3 are each given a dose of extract of  C.gigantea leaf stalk of 0,028 g/KgBB, 0,056 g/KgBB and 0,084 g/KgBB. The results showed that the identification of phytochemical profile in C.gigantea leaf stalk contains secondary metabolite compounds such as alkaloids, flavonoids, terpenoids, tannins and saponins. The results shows that giving of C.gigantea leaf stalk extract can reduce the number of leukocytes M.musculus which have induced aspirin. The giving of C.gigantea leaf stalk extract can decrease the number of aspirin-induced M.musculus leukocytes. This is evident from the results of One Way Anova analysis and the Smallest Real Difference Test (BNT) because in each treatment group has a significant influence. The effective dose that has the greatest activity in decreasing the number of M.musculus leukocytes found in the P1 treatment of 0,028 g /KgBB can decrease the blood leukocyte count by 6,830 / mm3.
UPAYA PENINGKATAN SENSITIVITAS NANOPARTIKEL PERAK UNTUK ANALISIS ION MERKURI(II) SECARA CITRA DIGITAL DENGAN PENAMBAHAN NaCl
Authors: Prasetia Edo , Firdaus M. Lutfi , Elvinawati Elvinawati
Published: July 2021

The very small concentration of mercury (Hg) in the environment is difficult to detect, so an accurate and sensitive method is needed in order to detect the concentration. Therefore, the purpose of this study was to develop an accurate and sensitive method based on the use of digital imaging methods and silver nanoparticles (AgNPs) as colorimetric sensors for mercury(II) ions (Hg2+) analysis. The process of making AgNPS is done by a bottom up method involving a reduction reaction. The precursor used is 1 mM AgNO3 solution and as bioreductor is an antioxidant compound present in extract of chili pepper (Capsicum frutescens L) with ratio 1: 9. Contact time variation 15, 30, 45, 60 min and 1, 2, 7 days. Addition of NaCl 0.5 and 1 M NaCl were used to increase the sensitivity of AgNPs as colorimetric sensors of Hg2+ ions. Digital Image Method is used to analyze Hg2+ ions at ppb concentration level. The results of the most optimum silver nanoparticles synthesized at the time of solar heating is 60 minutes. The addition of NaCl 0.5 M and 1 M into AgNPs is able to increase the sensitivity of AgNPs. Limit of Detection (LoD) of AgNPs added NaCl 0.5 M and 1 M was able to detect Hg2 + ions by 3.02 ppb and 2.46ppb.
PENGARUH KADAR Aspergillus niger TERHADAP PRODUKSI BIOETANOL DARI BONGGOL PISANG KEPOK ( Musa paradisiaca L)
Authors: Junaini Junaini , Elvinawati Elvinawati , Sumpono Sumpono
Published: July 2021

This study aims to determine the effect of Aspergillus niger levels on bioethanol production in banana cobs using Saccharfication Simultation Fermentation (SSF) method. This research uses banana kepok (Musa paradisiaca L.) obtained from Enggano Island of Bengkulu Province. Enggano Island is one of the outermost islands of Bengkulu Province which has a coordinate point of 5023'25,000 '' LS - 102014'16,000 '' BT. Samples of banana done preparation before the hydrolysis and fermentation process by smoothing the banana cobs using a blender until it becomes mush. Samples in the form of slurry were then added by Aspergillus niger and Sccharomyces cerevisiae. Hydrolysis performed for 72 hours which then continued with the fermentation process for 5 days. In the study there were 5 treatments: addition of Aspergillus niger 107 CFU/mL, addition of 10 mL Saccharomyces cerevisiae, addition of 10 mL Saccharomyces cerevisiae + Aspergillus niger 106 CFU/mL, 10 mL Saccharomyces cerevisiae + Aspergillus niger 107CFU/mL and 10 mL Saccharomyces cerevisiae + Aspergillus niger 108CFU/mL. The fermentation results were distilled and then measured the ethanol content by the specific gravity method. Ethanol content obtained from each treatment were 3.995%, 6.218%, 6.825%, 9.065%, and 12.348%, respectively. From one-way analysis test can be obtained the value of Fcount and Ftabel respectively are 25.73 and 5.19, so the value of Ftable< Fcount which means each treatment has a different result significantly.
STUDY ON Hibiscus tiliaceus LEAVES AS ANTIBACTERIAL AND ANTIOXIDANT AGENTS
Authors: Samsudin Mohamad Syahmie , Andriani Yosie , Sarjono Purbowatiningrum Ria , Syamsumir Desy Fitrya
Published: July 2021

This study aimed to evaluate antioxidant and antibacterial activities of methanol, hexane, dichloromethane, ethyl acetate, and water crude sample fractions of H. tiliaceus leaves. Various type of samples play an important role to determining which compound that will give the positive results in antioxidant test (inhibiting free radical scavenging activity) which they probably have potency for preventing the cancer disease. Furthermore, those types of samples were also tested to the antibacterial test as their possibilities to be created as new antibiotics in the future. This research also focused on what compound groups that actually present in H. tiliaceus leaves by using the phytochemistry test. Antioxidant potency of H. tiliaceus leaves extracts for the radical scavenging activity for quantitative assay was measured by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. The antibacterial potency was measured by the Muller Hinton Agar (MHA) by applied the sample chemical crude in the plate. The result showed that all chemical crude of H. tiliaceus leaves has high antioxidant property as methanol crude (MC) 308.416%; hexane crude (HC) 232.837%; dichloromethane crude (DC) 150.837%; ethyl acetate crude (EC) 73.623% and water crude (WC) 71.777% with respected to the readings of  100% from quercetin (Q) as a positive control. From antibacterial result, entire samples had shown the positive results towards both gram positive (Staphylococcus aureus and Bacillus subtilis) and gram negative bacteria (Klebsiella pneumonia and Escherichia coli). The ranges of the inhibition zone were both at 7-10 mm and 10-15 mm. The phytochemistry test determine that the samples actually contained a lot of compounds which were proteins, carbohydrates, phenols/tannins, flavonoid, terpenoids, glycosides and also steroid. It is clearly indicated that H. tiliaceus leaves have potential to be used against the antioxidant and also as new antibacterial agents
ANALISIS KADAR MERKURI PADA BIOTA AIR DENGAN NANOPARTIKEL PERAK SECARA CITRA DIGITAL DI LOKASI PENAMBANGAN EMAS KABUPATEN LEBONG
Authors: Nordan Hendry , Firdaus Mochamad Lutfi , Elvia Rina
Published: July 2021

This study aimed at determining of how the sensitivity of silver nanoparticles (NPP) in detecting metal mercury in aquatic biota samples through digital imagery. The Sampling of aquatic biota was carried out in the gold mining location of Lebong Tambang village in Lebong district (102 ° 12'00 "-102 ° 18'05" BT and 3 ° 10'00 "-3 ° 17 ' 00 "LS.) The aquatic biota samples analyzed included fish, shellfish, shrimp and plants as well as comparison samples such as water and sediment. The Analysis of mercury level was carried out from December 2018 - March 2019 by using NPP of digital imagery method. The digital imagery method was used as a detector to replace the conventional spectrophotometer. The result of mercury level in aquatic biota with NPP in digital imagery was susceptible compared to the UV-Vis spectrophotometry method. It can be seen from the Limit Of Detection (LOD) score of the digital imagery method with the SLR data analysis technique by using a digital camera that is equal to 2.305 ppb, where the score was smaller than the LOD value in spectrophotometry which is 300 ppb. The results of the analysis of mercury level by using digital imagery method were obtained the concentration on pool shells of 196.8 ppb, in pond fish samples of 155.7 ppb, in shrimp samples of 81.2 ppb, in river fish samples of 81.1 ppb, and in plant samples of 50.9 ppb. thus, these results indicate that the presence of mercury ions in the samples of aquatic biota tested has levels above the threshold, which means samples of fish, shrimp, shellfish and plants were risk to be consumed
POTENSI EKSTRAK TUMBUHAN ANDALIMAN (Zanthoxylum acanthopodium DC.) SEBAGAI ANTIBAKTERI Staphylococcus aureus
Authors: Sepriani Oma , Nirhamidah Nurhamidah , Handayani Dewi
Published: July 2021

The aims of this study is to determine the secondary metabolite compounds in Roots, stem bark, leaves and fruit of Andaliman (Zanthoxylum acanthopodium DC), and determine the most potent part of Andaliman plant extract in inhibiting the growth of Staphylococcus aureus bacteria. Andaliman plant taken in Simarpingan, Sipaholon village sub district of North Sumatra. Part of the Andaliman plantar are cleaned, cut into small pieces and then dried and mashed, samples that have been finely phytochemically tested and extracted. Testing of secondary metabolite compound by doing phytochemical screening of roots, stem bark, leaves and fruit of Andaliman, alkaloid test using meyers reagent, terpenoid test and steroid using TLC plate with eluent n-hexana : ethyl acetate with ratio 6:4, flavonoid test using soluton HCl and Mg band, saponin test using soap test, tannin test using ferro (III) chloride solution. Test of antibacterial activity using disc diffusion method. Phytochemical results showed that all parts of the plant andaliman contain secondary metabolite compounds namely alkaloids, flavonoids, terpenoids, tannins and also saponins. The result of antibacterial activity test of leaf extract of leaf and leaf which has the most potential as antibacterial of S.aureus is bark. Because it able to inhibit S.aureus growth with 11 mm inhibition zone at concentration 5x104 ppm, which is included in the strong category. In addition to skin of andaliman leaf stem is also potential as an antibacterial with a 10 mm inhibition zone at concentration 5x104 ppm, which is included in the medium category.
The Effect of Picture Word Inductive Model (PWIM) on Students’ Vocabulary Mastery
Authors: Kamarudin Kamarudin
Published: July 2021

This research is aimed at finding out whether using Picture Word Inductive Model has positive effect on students’ vocabulary mastery or not. The research was pre-experimental with pre-test post-test design. The population and sample of the study was second grade students of MTs NW Lingsar which consisted of one class (26 students). The instrument that was used objective test (20 items). The score was analyzed by used descriptive and inferential analysis. Descriptive analysis was used to describe mean; mode, median, and standard deviation of group, and inferential analysis was used to describe the value of t-test for comparison between t-table. It was showed that the value of-test = 4.708 was higher than the value of t-table = 1.708. So, using Picture Word Inductive Model has positive effect on students’ vocabulary mastery at MTs NW Lingsar.
Upaya Meningkatkan Kompetensi Guru SMK Negeri 4 Gowa dalam Melaksanakan Proses Pembelajaran di Kelas Melalui Program Supervisi
Authors: Kamaruddin H
Published: July 2021

This study aims to improve the competence of teachers of SMK Negeri 4 Gowa in carrying out the learning process in the classroom through a supervision program. This research method uses action research. The subjects of this study were teachers at SMK Negeri 4 Gowa. This research instrument uses observation and documentation. While the data analysis technique used descriptive analysis. The results of this study indicate that the competence of teachers at SMK Negeri 4 Gowa in implementing the learning process in the classroom through the supervision program has increased. With an intensive supervision and guidance program, it is proven to be able to improve the professionalism of teachers in classroom learning.
Implementasi Model Pembelajaran Project Based Learning untuk Meningkatkan Motivasi Belajar Peserta Didik di Kelas IV SD Negeri 2 Ngadimulyo Kabupaten Temanggung
Authors: Soraya Tria Alfi
Published: July 2021

This study aims to increase students' learning motivation using the Project based learning model in 4th grade of SD Negeri 2 Ngadimulyo. This research is a Classroom Action Research which was carried out in two cycles. Data analysis in this study is guided by quantitative descriptive analysis. Data collection techniques were carried out by questionnaires, observations and documentation. Data analysis in this study used quantitative descriptive analysis. The results of this study indicate an increase in students' learning motivation from cycle I to cycle II. The results of the first cycle of observations reached the sufficient category, namely 68% and 69% for the results of the questionnaire which were in the sufficient category. In cycle II there was an increase in students' learning motivation with good categories, the average percentage of students' learning motivation scores from both observation sheets and questionnaires were 80% and 81%.
Peningkatan Keterampilan Proses Sains Melalui Model Inkuiri Terbimbing bagi Siswa SD Negeri 1 Pingit Kabupaten Temanggung Jawa Tengah
Authors: Nasiroh Dinda
Published: July 2021

This study aims to improve science process skills through a guided inquiry model for Grade IV students at SD Negeri 1 Pingit. This research method is classroom action research which consists of two cycles with 3 meetings. The research design follows the research phase which refers to the modification of the Kemmis and Mc. Taggart, namely 1) action planning, 2) action implementation, 3) observation, and 4) reflection. The data collection technique used is the observation of teacher activity, student activity and observation of science process skills. The data analysis technique of this research used descriptive analysis. The results of this study indicate that there is an increase in science process skills from cycle I and cycle II. The increase was proven from the analysis of science process skills in the first cycle with an average of 73.21 with a completeness of 78.95%. In cycle II, science process skills obtained an average of 82.47 with 100% completeness. This shows that the guided inquiry model can improve the science process skills of fourth graders at SD Negeri 1 Pingit for the 2020/2021 academic year.
Outcome of Endonasal Dacryocystorhinostomy with Nasal and Lacrimal Sac Mucosal Flaps
Authors: Jeong Ilwon , Kim Sangduck
Published: July 2021

Purpose: In patients with nasolacrimal duct obstruction, the outcomes of surgery were evaluated according to the type or presence of flaps. Methods: In total, 509 eyes were compared retrospectively: 178 eyes in patients treated without flaps, 126 eyes in patients treated using nasal mucosa flaps, and 205 eyes in the patient group using nasal and lacrimal sac mucosal flap were compared retrospectively. We analyzed the factors of success according to the surgical method by comparing granulation and bony ostium obstruction at 1, 3, and 6 months after surgery in each group. Results: At 6 months after surgery, granulation was found in 6 eyes (2.93%) in the nasal and lacrimal sac mucosal flap group, 5 eyes (3.96%) in the nasal mucosal flap group, and 15 eyes (8.42%) in the group treated without flaps. Bony ostium obstruction was found in 3 eyes (1.46%) in the nasal and lacrimal sac mucosal flap group, 4 eyes (2.38%) in the nasal mucosal flap group, and 6 eyes (2.81%) in the group treated without flaps. The anatomical surgical success rate of patients treated with nasal and lacrimal sac mucosal flaps was 95.61%, which was higher than those of patients treated with nasal mucosal flaps (92.86%) and without flaps (88.20%). The functional and anatomical surgical success rate was 94.15% in the group treated with nasal and lacrimal sac mucosal flaps, 88.89% in the group treated with nasal mucosal flaps, and 84.83% in the group treated without flaps. Conclusions: Endonasal dacryocystorhinostomy using the nasal and lacrimal sac mucosal flap is an effective method that minimizes the risk of granulation and bony ostium obstruction.
Long-term Clinical Outcomes of Cataract Surgery in Patients with Retinitis Pigmentosa
Authors: Yoon Ji Hyun , Kim Jong Woo , Kim Chul Gu , Kim Jae Hui
Published: July 2021

Purpose: The long-term clinical outcomes of cataract surgery in patients with retinitis pigmentosa (RP) were evaluated. Methods: A retrospective analysis of medical records was performed for patients who were diagnosed with RP and underwent cataract surgery. Preoperative best-corrected visual acuity (BCVA) was compared with BCVA at 1 month postoperatively and at the final visit. The proportion of patients with cystoid macular edema development or aggravation after surgery was evaluated, as was the proportion of patients with intraocular lens subluxation/dislocation. For patients who underwent optical coherence tomography, factors associated with a BCVA of 0.5 or better at 1 month were analyzed. Results: In total, 133 eyes were included and the mean follow-up period was 58.7 months. The mean logarithm of minimal angle of resolution BCVA was 0.69 ± 0.65 at diagnosis. The BCVA was significantly improved to 0.51 ± 0.47 at 1 month postoperatively (p < 0.001). However, the BCVA at the final visit (0.70 ± 0.81) was similar to the baseline value (p = 1.000). Cystoid macular edema development or aggravation was noted in 8 eyes (6.0%) and intraocular lens subluxation/dislocation was noted in 4 eyes (3.0%). A subgroup analysis involving 108 eyes revealed that preoperative BCVA (p < 0.001) and ellipsoid zone status (p = 0.001) were associated with postoperative visual acuity. Conclusions: Short-term outcomes of cataract surgery in patients with RP were comparatively good. However, long-term visual deterioration was noted with disease progression. Preoperative BCVA and ellipsoid zone status are useful markers for predicting short-term visual outcomes.
Yükseköğretimde Toplum Örgütlenmesi: Recep Tayyip Erdoğan Üniversitesi Uluslararası Öğrenci Topluluğu Örneği
Authors: Güzel Bekir
Published: July 2021

Dünyada daha iyi bir eğitim alma amacıyla gerçekleşen göç hareketleri her geçen gün artmaktadır. Bu hareketliliğe bağlı olarak yükseköğretim kurumlarının giderek uluslararası bir yapıya dönüştüğü ve uluslararası öğrenci sayılarının arttığı görülmektedir. Ancak öğrenci sayılarındaki bu niceliksel artış yeni öğrenci sorunlarının ortaya çıkmasına ve/veya var olan sorunların yaygınlaşmasına yol açmaktadır. Sosyal hizmetin makro düzeydeki uygulama alanını oluşturan toplumla sosyal hizmet; insan hakları, sosyal adalet, eşitlik ve demokrasi gibi evrensel değerleri temel alan, toplum için sosyal refah alanlarında değişiklik yapmayı amaçlayan bir çalışma alanıdır. Toplumla sosyal hizmet uygulamalarında kullanılan toplum örgütlenmesi, toplum kalkınması, sosyal eylem ve sosyal planlama gibi farklı modeller bulunmaktadır. Bu modeller toplum ya da topluluk içinde hedeflenen ve planlanan değişimin gerçekleştirilmesi için yol gösterici olmaları nedeniyle oldukça önemlidir. Bu çalışmada toplum örgütlenmesi modeli kullanılarak üniversitelerde faaliyet gösteren öğrenci topluluklarının kuruluş, yönetim ve organizasyon süreçlerinin uygulama örneği üzerinden değerlendirilmesi amaçlanmaktadır. Bu kapsamda örnek uygulama olarak 2016 yılında Recep Tayyip Erdoğan Üniversitesi bünyesinde kurulan “Uluslararası Öğrenci Topluluğu” ele alınacaktır. Yapılacak olan değerlendirmede öncelikle toplumla çalışma modelleri ve yaklaşımları incelenecek, daha sonra makro uygulamalardaki temel teknikler aracılığıyla nasıl bir uygulama gerçekleştirildiği açıklanacaktır.
Assessment of Attitudes towards People Living with HIV/Aids in North Central Nigeria
Authors: Dalah Chiwa Musa
Published: July 2021

Previous researches has established that awareness and knowledge of HIV/AIDS in Northcentral Nigeria is high, but still people living with HIV/AIDS may face some sort of negative attitudes from family member and non-family members. This work has assessed the level of attitudes (stigmatization and discrimination) faced by people living with HIV in Northcentral Nigeria. HIV-related stigma refers to negative beliefs, feelings and attitudes towards people living with HIV/AIDS, their families, people who work with them (HIV service providers), and members of groups that have been heavily impacted by HIV/AIDS, such as gay and bisexual men, homeless people, street youth, and mentally ill people while HIV discrimination refers to the unfair and unjust treatment of someone based on their real or perceived HIV status. North central Nigeria consists of six states and the Federal capital territory Abuja. The states are Benue, Plateau, Kwara, Nasarawa, Niger, and Kogi. Secondary data from federal ministry of health is used for the assessment.
Knowledge and Awareness of the Link between Female Same Sex and Health Problems among Women Who Have Sex with Women in Tanzania
Authors: Mbishi Jackline V. , Saronga Happiness P , Bakar Saidah S , Kamazima Switbert R , Stanslaus Beatrice R , Shaaban Saumu K
Published: July 2021

Background: Women who have sex with other women (WSW) have high chances of health-related problems stemming from their unsafe sexual behaviors and practices. Their awareness of risky sexual behaviors and the health-related consequences is limited by the covert nature of WSW relationships. However, we cannot generalize the level of awareness since WSW around the world has been subjected to different policies that either proscribe or accept their practices as their right. In view of the divergence, this study evaluated the level of awareness of the link between female same sex and other health-related problems among WSW in Tanzania. Methods: This is a cross-sectional descriptive and retrospective study, which was conducted in Dar es Salaam between January and February 2021. The participants of the study were WSW, proxy WSW, and women who at one time had female same-sex relationships. The study also used community members aged 18 years and above but only those who met the inclusion criteria. Data were collected through qualitative in-depth interviews (IDIs), focus group discussions (FGDs), interviews (KIIs), and life stories. All the data generated through the study were analyzed thematically. Results: The findings of the study suggest that women have limited knowledge of the health-related risk that come with practicing same-sex. Most study participants did not believe they could contact STIs and other health-related problems through unsafe sexual practices with fellow women partners. Conclusion: Most WSW has limited knowledge of the health consequences of unsafe same sex practices. The research sets precedent for wide scope studies to address transmission risks of STIs among these communities in Tanzania.
Predictors of In-hospital Mortality In Patients With RT-PCR Confirmed Lassa Fever Infection Treated At A National Treatment Center, South West Nigeria
Authors: LO Olatunde , S.O Owhin , A.J Momoh , T.T. Adebayo , E Babatunde , B.E. Amodu , A.F Ogunmodede , A.O Kareem , I.F Amenkhienan , A.T Abidoye , O.C. Ashaju-Kayode , O.O. Jaiyeola , P.O. Ezeigbo , J.F. Alabi , L.A Ahmed
Published: July 2021

Background: Lassa fever (LF) infection is one of the viral hemorrhagic fever diseases found mainly in Sub-Saharan West Africa, including Nigeria. The case fatality rate is 60% among patients with Lassa fever complicated by AKI in one center study in Nigeria. Clinical and laboratory parameter has been documented as predictors of mortality among confirmed Lassa fever infected patients. Therefore, we decided to conduct similar study in our hospital to determine predictors of inhospital mortality among Lassa fever infected patients. Aim: This study was designed to determine the in-hospital clinical and laboratory predictors of outcome among RT-PCR (Real Time- Polymerase Chain Reaction) diagnosed Lassa fever patients. Methodology: This was a descriptive retrospective study involving the assessment of records of confirmed LF infected patients that were managed at the center from December 2019 to December 2020. 147 medical case record files of patients were retrieved for this study. Results: We found in our hospital setting, altered sensorium (p=0.001), seizures (p=0.001), bleeding diathesis (p=0.001), oliguria (p=0.001), elevated urea (p=0.001), elevated creatinine (p=0.001), hypoalbuminaemia (P=0.001), elevated SGOT (P=0.008) as significant predictors on in-hospital mortality. Conclusion: This study has helped us to identify the clinical parameters such as bleeding, central nervous system affectation, oliguria, tachycardia, tachypnea, hypoxaemia and laboratory parameters such as, elevated urea, elevated creatinine, hypoalbuminaemia as predictors of in-hospital mortality in RT-PCR confirmed Lassa fever patients. We believe early recognition of derangements of these parameters and with prompt intervention shall help to improve standards of care and outcome.
Theoretical analysis of approaches to the study of I-concept in the context of convicts’ correction
Authors: Adas'kova Svetlana
Published: July 2021

The relevance of the problem considered in the article is due to the need for effective implementation of convicts’ correction, the formation of their readiness to lead a law-abiding lifestyle after release, as well as a set of mental properties that determine the subjective need for lawful behavior in the main spheres of life. These goals can be achieved through the implementation of psychological support for correctional work with convicts. Psychological analysis of the reasons for committing crimes, current trends, scope and specifics of psychological work with persons serving sentences in correctional institutions requires studying the features of their "I-concept". The theoretical studies of the concept of "I-concept" in psychological science are analyzed, approaches to the relationship of I-concept with the concepts of "self-consciousness", "I-image", "self-esteem", "self-knowledge" are considered in the article. The author's definition of the concept of "I-concept" is presented: this is a complex holistic model in the relationship of all its structural elements in the context of their meaning and role to explain the significant psychological processes that occur with convicts at various stages of serving a sentence, and to determine the directions of an adequate differentiated psychocorrectional impact on convicts who have committed various crimes.