bluuebunny/crossref_metadata_2025_split huggingface dataset:
Penerapan Model Problem Based Learning (PBL) Dengan Strategi Guru Keliling (Guling) Pada Masa Pandemi
Authors: Lubis Nuraini , Destini Rita 
Published: December 2022

Tujuan penelitian ini untuk menerapkan proses pembelajaran matematika dengan strategi Guru Keliling (Guling) dalam pembelajaran matematika menggunakan Model Problem Based Learning (PBL). Jenis penelitian yang digunakan dalam penelitian ini yaitu kualitatif. Subjek yang terlibat dalam penelitian ini adalah guru dan siswa SMPN 3 Pulau Rakyat Asahan Sumatera Utara. Teknik analisis data dilakukan dengan triangulasi dari observasi, wawancara dan studi dokumentasi. Hasil penelitian menunjukkan bahwa strategi guru keliling ini efektif dilaksanakan bagi siswa yang lokasinya jauh dari kota yang tidak memiliki handphone atau laptop sebagai sarana pembelajaran dimasa pandemi ini. Siswa merasa senang, karena ada sarana belajar dan bertanya kepada guru dan teman satu kelas.
Pembelajaran Connected Mathematic Project Pada Materi Peluang Menggunakan Alat Peraga Dalang Pelangi
Authors: Widyaningrum Indah , Susanti Novi , Hanalisa Rani 
Published: December 2022

Tujuan penelitian ini adalah untuk mengetahui, apakah ada Pengaruh Model Pembelajaran Connected Mathematic Project Terhadap Hasil Belajar Siswa Pada Materi Peluang Menggunakan Alat Peraga Dalang Pelangi Kelas VIII SMP Muhammadiyah Jarai. Metode yang digunakan dalam penelitian ini adalah Post-test only control design. Teknik pengumpulan data yang digunakan yaitu Tes dan Dokumentasi. Untuk mengukur hasil belajar matematika siswa dalam penelitian ini digunakan tes tertulis yang berbentuk essai yang berjumlah 5 soal. Berdasarkan analisis data diperoleh nilai rata-rata siswa kelas eksperimen 74, 5 sedangkan nilai rata-rata kelas kontrol 61, 92. Dari hasil penelitian dapat disimpulkan bahwa ada pengaruh model pembelajaran Connected Mathematic Project terhadap hasil belajar siswa pada materi Peluang menggunakan alat peraga Dalang Pelangi. Alat peraga dalang pelangi dapat mempermudah siswa dalam menemukan konsep materi peluang
Realistisk syntese: Potentialer og udfordringer
Authors: Højmark Esben , Bredgaard Thomas 
Published: December 2022

Vi mangler gode analysetilgange til at undersøge hvorfor og hvordan komplekse indsatser virker. Traditionelle ”systematiske reviews” som anvendes på sundhedsområdet er gode til at undersøge hvorvidt, men ikke hvorfor og hvordan indsatser virker. På de komplekse velfærds- og socialområder er der ikke bare brug for viden om hvorvidt indsatser virker, men også hvorfor og under hvilke omstændigheder virkningerne indtræffer. Den ”realistiske syntese” har potentiale til at udgøre et brugbart supplement.
Der eksisterer imidlertid ikke en klar fremgangsmåde til at gennemføre realistiske synteser. Tilgangen kan derfor være udfordrende og tidskrævende for evaluator, ligesom dens resultater kan være ugennemsigtig for læseren og i værste fald en delvis eller misvisende repræsentation af den eksisterende viden på området.
I denne artikel reflekterer vi over de metodiske udfordringer i realistisk syntese og diskuterer potentielle løsninger herpå. Vi diskuterer fremgangsmåder til udvikling af foreløbige programteorier, dataindsamling, kodning og syntese. I den forbindelse opstiller vi en genbeskrivende analysestrategi, der kan guide evaluator og sikre gennemsigtighed i analyse- og syntesefasen.
ERKEN ORTAÇAĞ TÜRK KAVİMLERİNDE GİYİM KUŞAM VE MODA
Authors: KURT Gökhan 
Published: December 2022

İnsan hayatındaki en önemli faktörlerden birisi de giyinme ihtiyacıdır. İnsanoğlu var olduğundan beri ilk olarak basit bitki liflerinden daha sonraları ise deri, keçe, kumaş gibi malzemelerden elbiseler yapıp kullanmışlardır. Giyim, ilk zamanlardan itibaren insanlar için zaruri bir ihtiyaç olmuş insanları coğrafi şartlardan korumuştur. Fakat giyim kültürünü coğrafya ve iklimle açıklamamız mümkün değildir. Bu yüzdendir ki insanların giyim tarzı ve alışkanlıkları inançlarına ve etkileşime geçtikleri diğer kültürlere göre şekillenmiştir. Avcılıkla hayatını sürdüren kavimlerle, yerleşik hayatta üretim ile uğraşan kentlilerin kıyafetleri bir değildir. Ayrıca millet ve din farkı da kıyafetlerdeki değişik tarzların olağan sonucudur. Giyim tarzının ve anlayışının simgesel gücüyle insanların yaşadığı coğrafyayı, milletini ve hangi dinden olduğunu anlamak mümkün olabilmektedir.
Bu çalışmada bütün bu coğrafi, kültürel ve dili faktörlerin etkisi doğrultusunda Erken Ortaçağda Orta Asya Türklerinde giyim-kuşam ve moda incelenmiş bu dönemde Orta Asya Türklerindeki keçe, kumaş üretimi, dokumacılık sanatı ve arkeolojik giyim malzemeleri üzerinde durulmuştur.
STİLOMETRİ METODUYLA “ŞÜPHELİ” METİNLERDE YAZARI BELİRLEME: REŞAT ENİS ÖRNEĞİ
Authors: ÇETİN BAYCANLAR Sema , TAHİROĞLU B. Tahir 
Published: December 2022

Edebî metinlerle ilgili çalışmalarda metnin kime ait olduğu bilgisi okur, araştırmacı ve edebiyat tarihi için önemli bir bilgi kaynağıdır ancak tarihi süreçlerde, bu bilginin farklı çekincelerle gizlendiği görülür. Sanatçının kendisini gizlemek için takma (müstear) ad veya adlar kullandığı bazı metinler bir süre sonra açığa çıkmakla birlikte bazı metinlerin kime ait olduğu şüphelidir.
Şüpheli metinlerde okur sezgisel olarak ya da sözlü-yazılı birtakım kaynaklardan yola çıkarak bir tahminde bulunabilir fakat sadece bu verilerle şüpheli metnin kime ait olduğunu bilimsel olarak ispat etmek ya da olasılıklar üzerinden bir değerlendirme yapmak zordur. Bununla birlikte günümüzde dilbilimsel çalışmalarda ve adlî dilbilim çalışmalarında kullanılan stilometri yönteminin yazarı bilinmeyen ya da şüpheli olan metinler için uygun bir belirleme yöntemi olarak kullanılması mümkündür.
Reşat Enis’in 1940’lı yıllarda bir süre çalıştığı Bugün gazetesinde, Ayşe Enis imzasıyla yayımlanan hikâyeler, şüpheli metin olarak yorumlanmış ve bu hikâyelerin Reşat Enis’e ait olabileceği düşünülmüştür. Reşat Enis’in daha önce kullandığı, kaynaklarda yer alan ve bilinen tek müstearı Süheyla Şefik olmasına rağmen yazarın Bugün gazetesinde çalıştığı yıllarda gazeteci-yazar kimliğiyle Reşat Enis ve Süheyla Şefik imzasıyla metinler yayımladığı belki de bu sebeple üçüncü bir imzaya ihtiyaç duyduğu söylenebilir.
Reşat Enis’in ilk ve tek hikâye kitabı olan Kılıcımı Sürüyorum’daki (1930) hikâyelerinin dışında, süreli yayınlarda kalmış ve Reşat Enis imzasıyla yayımlanmış elliden fazla hikâyesi bulunmakla birlikte bu hikâyeler kitaplaşmamıştır. Bu çalışmada ise karşılaştırılacak metinlerin hacmi gözetilerek Ayşe Enis imzasıyla yayımlanan yirmi iki hikâye, Kılıcımı Sürüyorum eserinde yer alan on üç hikâyeyle birlikte ele alınmış, bu metinler stilometri yöntemiyle karşılaştırılmış ve yorumlanmıştır.
A Study on CNN Feature Extraction for Stock Price Prediction
Authors: Li Yuanhang , Xie Zhengjie 
Published: December 2022

The return on investment for investors in the stock market is highly dependent on the investor's timing strategy, that is, the decision of what time to buy or sell a stock. A successful timing strategy requires investors to accurately identify the price movement of a company. As a result, some investment professionals have created technical analysis analytical methodologies to forecast the short-term trend of a stock. However, technical analysis approaches are prone to subjectivity, such as the selection of technical indicators and indicator periods. This essay attempts to utilize a convolution layer in deep learning to extract features as an alternative to technical indicators and to reduce subjective elements' effect on prediction bias. Several stock predictions are evaluated between a standard LSTM model and an LSTM model with convolution layers (CNN-LSTM model) in this research. The experimental results show that the CNN-LSTM model outperforms the standard LSTM model in predicting the price of certain stocks with a big market capitalization and high liquidity.
Design and Implementation of COVID-19 Data Analysis and Visualization System
Authors: Chen Yingying , Lv Taizhi 
Published: December 2022

In order to facilitate the real-time analysis of COVID-19, a COVID-19 data analysis and visualization system is designed and implemented, which acuqries data from Baidu epidemic platform. It displays the epidemic dynamics, new trends, cumulative diagnosis, diagnosis distribution and other information through a big visualization screen. This system adopts the front-end and back-end separation technology, uses Scrapy to acquire epidemic data, and stores the data in the MySQL database through cleaning, conversion and other steps. The back-end obtains data based on Spring Boot, and the front-end uses Vue technology to analyze the back-end data and display the epidemic data in ECharts diversified charts. The practice under the production environment proves that the system can meet the requirements of real-time display and has high scalability.
التفكير الجانبي لدى طلبة كلية التربية البدنية وعلوم الرياضة
Authors: شيماء حسون مشكور  , د. لمى سمير حمودي  
Published: December 2022

يستهدف البحث الحالي التعرف على درجه التفكير الجانبي لدى طلبه جامعه ديالى ودلاله الفروق في هذا المتغير تبعا للمرحله الدراسيه للطلبه ، ولحاجه الباحثتان الى اداة القياس قامتا ببناء اختبار التفكير الجانبي وفقا لتعريف دي بونو.، تحققت الباحثتان من الخصائص القياسيه للاداة ،اذ بلغت عينة التطبيق النهائي(252) طالبا وبواقع (102) من المرحله الثالثه و(150) طالبا من المرحله الرابعه والذين تم اختيارهم بالطريقه الطبقيه ، وبعد تطبيق اداة البحث وتحليل البانات احصائيا باستعمال الحقيبه الاحصائيه توصلت الباحثتان الى ان طلبه كليه التربيه البدنيه وعلوم الرياضه وللمرحلتين الثالثه والرابعه يتمتعون بدرجه من التفكير الجانبي واستنادا الى تلك النتائج استنتجت الباحثتان بان امتلاك عينه البحث درجه من التفكير الجانبي كان نتيجة ماتعرض اليه الطلبه خلال مراحلهم الدراسيه للاختبارات المتعددة وفي مختلف المواد الدراسيه قدمت الباحثتان مجموعه من التوصيات وكان من اهمها الاهتمام بتنمية مهارات التفكير الجانبي لدى الطلبه ومنحها الأولوية في العملية التربوية في الجامعات وذلك بتضمين المناهج مشاكل ومواقف تعليمية تدعو لاستخدام التفكير الجانبي بأساليبه المختلف، اعداد برامج لتنمية التفكير الجانبي بغرض تحسين وتطوير العلمية التعليمية وتوجيه الطلاب الي الاهتمام بتنمية مهاراتهم الذاتية وقدراتهم علي وضع استراتيجيات سليمة للدراسة والاستذكار.إضافة الى اعتماد مقياس الدراسة الحالية من الأدوات التي تستخدم في التقييم الجامعي بهدف التقويم والمتابعة والكشف والتوصل عن أساليبهم في التفكير.اجراء المزيد من البحوث والدراسات حول العوامل المعرفية والتفكير الجانبي .التوصيات تضمين المناهج الجامعيه الرياضيه انشطه وتدريبات على استراتيجيات تنميه مهارات التفكير بشكل عام والتفكير الجانبي بشكل خاص واعتمادها كاحد مؤشرات القبول والارشاد والتوجيه التربوي والمهني والرياضي .اذ تعد مرحلة الدراسة الجامعية من المراحل الأساسية المهمة لأنها تضم أعداداً كبيرة من الشباب يقع على عاتقهم مسؤولية إعدادهم علمياً وثقافياً واجتماعياً وتربوياً بما يمكنهم من القيام بمسؤولياتهم المستقبلية . غير إن الاهتمام بشريحة الطلبة الجامعيين يعني الاهتمام بالمجتمع ومستقبله إذ يقع على عاتقها مسؤولية قيادة ذلك المجتمع مستقبلاً .
LEGAL CONCERNS OF THE EUROPEAN UNION ON COMBATING TRAFFICKING IN HUMAN BEINGS
Authors: Diaconu Nicoleta 
Published: December 2022

Trafficking in human beings is a form of crime that has spread in the contemporary era. Victims of trafficking in human beings are vulnerable people, especially women, children or jobseekers, lured by promises of advantageous jobs abroad, treatment opportunities or study offers. The European Union promotes international cooperation and makes legislative and institutional efforts to combat trafficking in human beings.
The EU Strategy to Combat Trafficking in Persons (2021-2025) focuses on preventing crime, bringing traffickers to justice, protecting victims and strengthening Member States' capacity to act.
THE COMPLIANCE WITH THE RIGHT TO A DOUBLE DEGREE OF JURISDICTION IN THE MATTER OF PLEA AGREEMENT
Authors: Moiceanu Nicolae-Alexandru 
Published: December 2022

The expansion of negotiated justice phenomenon has generated and continues to produce profound reverberations in current legal systems. The emergence and development of proprietary forms of manifestation of the concept has led to important structural changes in the procedural architecture of all contemporary jurisdictions, regardless of their origin, continental or common-law. The collision of this new form of accomplishing justice and public safety with the established landmarks of the classic criminal process has led to a paradigm shift in relation to the nature and consistency of the fundamental rights of participants in the criminal process.
One of the most important such rights is the right to a double degree of jurisdiction in criminal matters, a principle widely embraced by all major legal systems. The interference of the landmarks on which representative institutions for the idea of negotiated justice are based on with this principle has caused many controversies regarding its imminent dissolution, discussions found even at local level, with the introduction of the special procedure of the plea agreement in the current Code of Criminal Procedure.
THE EUROPEAN ORDER FOR PAYMENT – AN EFFECTIVE MECHANISM FOR RECOVERING CROSS-BORDER CLAIMS
Authors: Dudaș Ioana Luminiţa 
Published: December 2022

The rapid and efficient recovery of certain liquid and due claims is a goal assumed by the Member States of the European Union, having a special importance for economic operators in the European Union, as late payments are a major cause of insolvency, which increasingly threatens small and middle sized enterprises.
Thus, the European Parliament adopted Regulation (EC) no. 1896/2006 establishing a procedure for issuing a joint European order for payment, as well as Regulation (EC) no. 861/2007 establishing a common European debt procedure, the purpose of which is to simplify, speed up and reduce the costs of settling cross-border disputes concerning uncontested pecuniary claims by issuing a European order for payment and ensuring the free movement of European order for payments, legal transactions and documents in all Member States by setting minimum standards the observance of which makes any intermediate procedure in the Member State of enforcement unnecessary before recognition and enforcement.
THE IMPACT OF THE PANDEMIC ON THE FREE MOVEMENT OF PEOPLE IN THE EUROPEAN SPACE
Authors: Gavruta Andreea 
Published: December 2022

This paper highlights the impact of the pandemic in the European space, which involves the protection measures against the SARS-COV-2 virus, its harmful and destructive effects manifested on the population, while highlighting the operational activities of the states, regarding the protection of citizens' health. These actions of the states, with regard to the protection measures against the pandemic, incontestably imply a "passage" in the online sphere of all the processes that ensure the normal conduct of society, restricting certain rights and freedoms of citizens, including the right to free movement, this being possible only on the basis of a health certificate, recognized at European level. So this restriction of movement across borders is a safe way to prevent the population from becoming infected with the killer virus.
Herkenning, erkenning en respect voor elkaars grenzen
Authors: van der Meer Manon 
Published: December 2022

Recognition, acknowledgement and respect for each other’s boundaries. In conversation with Mariëtte Hamer and Janine Janssen about sexual transgressive behavior and violence
Mariëtte Hamer and Janine Janssen have a conversation about sexually transgressive behavior and violence. Both women are, as government commissioner and researcher respectively, strongly involved with this theme. Hamer and Janssen discuss how they view the #MeToo movement, what the limits are on transgressive behavior, and what should happen for tackling sexually transgressive behavior and violence and preventing these in the future. Because limits on behavior are not always crystal clear and can differ from one person to the other, it is of importance to continuously talk about them. Offenders and those accused of transgressive behavior should not be forgotten in these conversations. At the moment, much attention is given to tackling and preventing sexually transgressive behavior and violence, but many things need to happen still, and they need continuous attention, as Hamer and Janssen bring forward.
A language of convergence: the co-created handmade thing as a ‘conversation starter’ within restorative justice processes
Authors: Aldington Clair 
Published: December 2022

A language of convergence: the co-created handmade thing as a “conversation starter” within restorative justice processes
Literacy and language challenges amongst offending populations are well-documented and yet restorative justice processes rely heavily on oral and literacy competencies. Through a qualitative practice-based study, the co-creative making and gifting of a handmade thing as part of a restorative justice process is found to enable the formation of a ‘physical’ and ‘non-offending language’ within the person responsible (offender). In this way, a handmade thing is viewed as a ‘conversation starter’, and as helping to form connections, so-called solidarities, across the space between participants in restorative justice encounters. Through phenomenological and thematic analyses of the data, co-creative making and gifting are shown to be innately about the formation of solidarities between people. It is proposed that they contribute towards a language of convergence in which non-verbal components are primary, with verbal elements emerging secondarily. This language draws on the author’s own definition of solidarity in restorative justice research and practice as a place of convergence, meaning to bend or turn towards the other.
Gambaran Komplikasi Ibu Hamil Risiko Tinggi (4T)
Authors: Gladeva Yugi Antari  
Published: December 2022

Angka kematian ibu (AKI) didunia masih cukup tinggi. Hal ini juga terjadi di Indonesia, terbukti dengan target SDG’s yang belum mencapai target yang diharapkan. banyak upaya pemerintah untuk menurunkan AKI di Indonesia, salah satunya adalah peningkatan upaya kesehatan ibu hamil dengan menapis 4T sebagai penyebab komplikasi selama kehamilan. Upaya ini diharapkan mampu mengurangi AKI di Indonesia. Adapun tujuan dari penelitian ini adalah untuk mendapatkan gambaran komplikasi ibu hamil yang mengalami resiko tinggi (4T) di UPT Puskesmas Kecamatan Plampang. Penelitian ini menggunakan deskriptif kuantitatif dengan jumlah sampel sebesar 45 ibu hamil. Data yang digunakan adalah data sekunder, yang diambil dari kohort ibu. Data diambil dari bulan Januari sampai dengan September 2021. Teknik pengumpulan data menggunakan Total random sampling yang sesuai dengan kriteria inklusi. Analisis data disajikan dalam bentuk table distribusi frekuensi, dengan jumlah sampel sebesar 45 ibu hamil.Hasil yang didapatkan berupa distribusi frekuensi dari komplikasi kehamilan seperti abortus (17%), preeklamsia (8%), ketuban pecah dini (38%), anemia (6%) dan hyperemesis gravidarum (31%). Kesimpulan: Komplikasi ketuban pecah dini paling banyak terjadi pada ibu hamil dengan resiko tinggi.
Uji Skrining Fitokimia Dan Uji Aktivitas Antibakteri Ekstrak Etanol Batang Gaharu (Aquilaria Malaccensis L). Asal Desa Negeri Lima Kecamatan Leihitu Terhadap Bakteri Staphylococcus Aureus Menggunakan Metode Difusi Sumuran
Authors: Risman Tunny  , Wiwi Rumaolat  , Mitha Soumena  
Published: December 2022

Batang gaharu (Aquilaria malaccensis L.) merupakan salah satu tanaman yang dapat dimanfaatkan sebagai antibakteri yang diperlukan tubuh untuk melawan bakteri patogen. Potensi antibakteri yang dimiliki batang gaharu disebabkan adanya kandungan senyawa kimia didalamnya. Penelitian ini bertujuan untuk mengidentifikasi kandungan senyawa kimia batang gaharu (Aquilaria malaccensis L.) serta mengetahui zona hambat dari antibakteri ekstrak etanol batang gaharu (Aquilaria malaccensis L.) yang dilakukan dengan menggunakan metode difusi sumuran. Pada penelitian ini dilakukan uji skrining fitokimia menggunakan pelarut etanol 96%. Ekstraksi batang gaharu dilakukan dengan menggunakan metode maserasi. Hasil skrining fitokimia ekstrak etanol batang gaharu (Aquilaria malaccensis L.) menunjukan adanya senyawa flavonoid, alkaloid, dan terpenoid. Hasil uji efektifitas antibakteri ekstrak etanol batang gaharu (Aquilaria malaccensis L.) terhadap pertumbuhan bakteri Staphylococcus aureus diperoleh konsentrasi 15% dengan diameter zona hambat 11 mm, konsentrasi 30% dengan diameter 13 mm, dan konsentrasi 60% dengan diameter 14 mm.
EFEKTIVITAS AKUPRESUR DAN EKSTRAK DAUN SALAM TERHADAP KADAR ASAM URAT PADA KLIEN ARTHRITIS GOUT
Authors: Nadia Sari  , Tri Johan Agus Yuswanto  , Diyah Fatmasari  
Published: December 2022

Latar Belakang: Arthritis gout merupakan penyakit yang diakibatkan oleh adanya gangguan metabolisme purin yang ditandai oleh hiperuriklemia. Kadar asam urat diatas batas normal dapat menyebabkan resiko kelainan hemodinamik seperti penyakit kardiovaskular dan resiko kelainan metabolik seperti disfungsi ginjal. Penanganan kadar asam urat pada arthritis gout tidak hanya terapi farmakologis namun juga bisa intervensi keperawatan komplementer seperti akupresur dan ekstrak daun salam.
Tujuan: Membuktikan akupresur dan ekstrak daun salam efektif dalam menurunkan kadar asam urat pada klien arthritis gout.
Metode: Penelitian ini mengunakan true eksperiment dengan pendekatan pre and post test control group design dan jumlah sampel sebanyak 30 responden dibagi menjadi 3 kelompok dengan teknik random simple random sampling kemudian diberikan akupresur pada titik hegu dan taixi dengan durasi 5 menit dan ekstrak daun salam dosis 1 gram selama 12 hari perlakuan.
Hasil: Kadar asam urat mengalami penurunan pada kelompok intervensi, kontrol 1 dan kontrol 2. Tetapi berdasarkan uji Anova pada variabel kadar asam urat menunjukkan kelompok intervensi paling efektif penurunannya dengan nilai (1,98±0,53) pada kelompok kontrol 1(0,95±0,28) serta kelompok kontrol 2 (1,17±0,28) dengan nilai signifikan kadar asam urat (p=0,000).
Kesimpulan: Kelompok yang paling efektif untuk menurunkan kadar asam urat dalam intervensi keperawatan komplementer yaitu perlakuan akupresur dan ekstrak daun salam pada kelompok intervensi.
UJI AKTIVITAS ANTIBAKTERI EKSTRAK ETANOL DAUN TAPAK DARA (Catharantus roseus) DI DESA LISABATA TERHADAP PERTUMBUHAN BAKTERI S t ap h yl o c oc c u s a u r eu s DENGAN MENGGUNAKAN METODE DIFUSI AGAR
Authors: Anatje J. Pattipeilohy  , Cut Bidara Panita Umar  , Mnhammad Taip Pattilouw  
Published: December 2022

The tapak dara plant is known as an ornamental plant that is efficacious for relieving muscle pain , antidepressant , medicine for various diseases ( ie relieving swelling caused by wasp stings , nosebleeds and sore throats ), antidote , antibacterial , and lowering blood pressure in humans . Purpose of Research of this is to identify the content of the chemical from the leaves of tread virgin ( Catharantus roseus ), which serves as an antibacterial and to test the activity of antibacterial extract ethanol leaves tread virgin ( Catharantus roseus ) against the growth of bacteria Staphylococcus aureus by using the method of diffusion in order. Method which are used in research this is experimental by using the method of diffusion in order. This study used concentrations of 5%, 20%, 60%, and 80%. Positive control (+) chloramphenicol antibiotic , negative control (-) aquadest . Results of the study is the extract of leaves of Tread Dara ( Catharantus roseus ) can inhibit the growth of bacteria in a concentration of 80% by having an average zone of inhibition of which is 21 mm including the category is very strong and the concentration of 60% at 20 mm.