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  1. To evaluate the antibacterial effect of diode laser and photodynamic therapy using methylene blue dye when used alone or in combination with Moringa oleifera extract on root canal microbes. A total of 50 single r...

    Authors: Doaa M. Sadony, Maram E. Khallaf and Jackline Samir Kamal

    Citation: Bulletin of the National Research Centre 2021 45:53

    Content type: Research

    Published on:

  2. Botanical pesticides may be a possible solution to the post-harvest loss of stored grains faced by farmers and food processors. In this study, seed preservatives properties of Secamone afzelii leaves extracts at...

    Authors: J. M. Adesina and A. T. B. Aderibigbe

    Citation: Bulletin of the National Research Centre 2021 45:52

    Content type: Research

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  3. Wheat is the most consumed cereal crops in the world infected by several pathogens and pests causing significant losses. The most threatening pathogens are fungi which cause serious diseases on roots, leaves a...

    Authors: Mohammed Hamza Abass, Qusai Hattab Madhi and Abdulnabi Abdul Ameer Matrood

    Citation: Bulletin of the National Research Centre 2021 45:51

    Content type: Research

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  4. Managing menstrual hygiene in the least developed countries represents a significant obstacle for women and girls. Commonly dirty stuffs are used to control the menstrual cycle which causes many diseases, whil...

    Authors: Md. Moynul Hassan Shibly, Mohammad Anower Hossain, M. Forhad Hossain, Md Golam Nur and Mohammad Billal Hossain

    Citation: Bulletin of the National Research Centre 2021 45:50

    Content type: Research

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  5. The Himalaya hotspot, habitat to numerous indigenous species, harbours an endemic and endangered, cucurbit climber Herpetospermum darjeelingense (C.B.Clarke) H.Schaef. & S.S.Renner [Edgaria darjeelingensis C.B.Cl...

    Authors: Sourav Chakraborty, Soumya Majumder, Arindam Ghosh, Sumedha Saha and Malay Bhattacharya

    Citation: Bulletin of the National Research Centre 2021 45:48

    Content type: Research

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  6. This study was conducted to generate baseline information on population dynamics of Fall Army Worm (FAW) in cassava-maize intercrop for management technique. Maize (Zea mays) is Africa’s most staple food crop wit...

    Authors: J. A. C. Nwanze, R. B. Bob-Manuel, U. Zakka and E. B. Kingsley-Umana

    Citation: Bulletin of the National Research Centre 2021 45:44

    Content type: Research

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  7. Cotton breeding programs mainly focus on improving cotton fibers, but less attention has been paid by breeders to cottonseed oil improvement. Breeding cottonseed for oil content has mainly depended on phenotyp...

    Authors: Sara E. I. Eldessouky, A. B. A. El-Fesheikawy and K. M. A. Baker

    Citation: Bulletin of the National Research Centre 2021 45:43

    Content type: Research

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  8. Comparing shaping ability of Azure and Fanta AF One in rotation and reciprocation. This study was conducted on 40 resin blocks, having canal curvatures 30°-angle and of 16-mm length. The blocks were assigned t...

    Authors: Engy M. Kataia, Mohamed Mokhtar Nagy, Mohamed M. Kataia and Hala Fayek Khalil

    Citation: Bulletin of the National Research Centre 2021 45:42

    Content type: Research

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  9. The antimicrobial activity against clinically and agriculturally important microorganisms, antioxidant property and chemical profiling of acetone crude extracts of non-edible oil-seed cakes of neem (Azadirachta i...

    Authors: A. VasudhaUdupa, Balakrishna Gowda, B. E. Kumarswammy and M. B. Shivanna

    Citation: Bulletin of the National Research Centre 2021 45:41

    Content type: Research

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  10. The aim of this study is a comparison between some different protein sources in sheep rations to identify the best protein source that achieves the highest production performance and the lowest economical feed...

    Authors: Yasser A. A. El-Nomeary, Hashem H. H. Abd El-Rahman, Mohsen M. Shoukry, Abdelmegid A. Abedo, Fatma M. Salman and Mamdouh I. Mohamed

    Citation: Bulletin of the National Research Centre 2021 45:40

    Content type: Research

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  11. COVID-19 (Corona Virus Disease 2019) is showing a wide global spread, and urgent joint international efforts is required to the control of this pandemic, the awareness of people towards infectious viruses stil...

    Authors: Manal A. Shehata, Ahmed Adel, Ayman F. Armaneous, Mohamed M. EL-Sonbaty, Mohamed Abdel Atti, Hazem Mohamed El-Hariri and Iman H. Kamel

    Citation: Bulletin of the National Research Centre 2021 45:39

    Content type: Research

    Published on:

  12. Liposomes have the ability to enclose hydrophilic or lipophilic materials. Bioactive macromolecules become more stable when they are entrapped within liposomes resisting environmental changes, allowing mainten...

    Authors: Maha G. Haggag, Medhat W. Shafaa, Hossam S. Kareem, Amir M. El-Gamil and Hoda H. El-Hendawy

    Citation: Bulletin of the National Research Centre 2021 45:38

    Content type: Research

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  13. Several chemical bactericides were applied for controlling soft rot bacteria, Pectobacterium carotovorum subsp. carotovorum, which causes the destructive soft rot disease to many economically important vegetables...

    Authors: Hassan Abd-El-Khair, Tarek G. Abdel-Gaied, Maurice S. Mikhail, Ahmed I. Abdel-Alim and Hamdy I. Seif El-Nasr

    Citation: Bulletin of the National Research Centre 2021 45:37

    Content type: Research

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  14. Infectious diseases, such as the latest COVID pandemic, caused by microorganisms like bacteria and virus, wreak havoc shaking human civilization with its rapid infection rate, and high number of mortalities. I...

    Authors: Sreerup Banerjee, Shriram Raghunathan, Saubhik Banerjee and Boudhayan Bandyopadhyay

    Citation: Bulletin of the National Research Centre 2021 45:35

    Content type: Research

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  15. The identification of banana cultivars genome is needed to provide a valid identity from the accession of bananas which are used as basic data in the management of in situ and ex situ banana conservation as we...

    Authors: Rasyadan T. Probojati, Dwi Listyorini, Sulisetijono Sulisetijono and Didik Wahyudi

    Citation: Bulletin of the National Research Centre 2021 45:33

    Content type: Research

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  16. Coronavirus disease (COVID-19) is considered a highly contagious disease with flu-like symptoms and causing relatively high level of death. It can be transmitted from a person to another through droplets and t...

    Authors: Rasha F. Sharaf and Nihal Kabel

    Citation: Bulletin of the National Research Centre 2021 45:32

    Content type: Research

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  17. Soil degradation remains a serious threat to agricultural production. With increase downpour due to climate change effect, more farmlands are exposed to erosion. Therefore, ecologically sound strategies for er...

    Authors: E. A. Ewetola, G. E. Fanifosi, A. A. Ezekiel, A. A. Adetona, F. M. Oyewole, N. M. Onatoye, I. T. Idowu and A. K. Akinniku

    Citation: Bulletin of the National Research Centre 2021 45:30

    Content type: Research

    Published on:

  18. Neonatal sepsis is the major cause of morbidity and mortality in neonates. Frequency of bacterial sepsis is affected by seasonal variations. This study was done to rule out the effects of seasonal variation on...

    Authors: Mohamed A. Abdel Mawla, Eman A. Mostafa, Rasha M. Hasanin and Mohab M. Salah

    Citation: Bulletin of the National Research Centre 2021 45:29

    Content type: Research

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  19. Toxicities of Vernonia amygdalina and Tithonia diversifolia leaf powders and extracts on larva and adult mortality of Dermestes maculatus on smoke-dried catfish were evaluated in the laboratory. The leaf powders ...

    Authors: Kayode David Ileke

    Citation: Bulletin of the National Research Centre 2021 45:28

    Content type: Research

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  20. At present, the entire world is in a war against COVID-19 pandemic which has gradually led us toward a more compromised “new normal” life. SARS-CoV-2, the pathogenic microorganism liable for the recent COVID-1...

    Authors: Mohammad Mahfuz Ali Khan Shawan, Sajal Kumar Halder and Md. Ashraful Hasan

    Citation: Bulletin of the National Research Centre 2021 45:27

    Content type: Research

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  21. This study was aimed to determine the prevalence of qnr genes among fluoroquinolone-resistant Escherichia coli (FREC) isolates from Nigeria. Antimicrobial susceptibility testing was performed by disc diffusion te...

    Authors: Chibuzor M. Nsofor, Mirabeau Y. Tattfeng and Chijioke A. Nsofor

    Citation: Bulletin of the National Research Centre 2021 45:26

    Content type: Research

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  22. Agriculture being one of the major practices in the world has contributed to environmental pollution, especially in developing countries where there were no equipment to recycle the agricultural wastes. Consid...

    Authors: Michael Olufemi Ashamo, Kayode David Ileke and Ayomiposi Idowu Onasile

    Citation: Bulletin of the National Research Centre 2021 45:25

    Content type: Research

    Published on:

  23. Cotton is the most widespread, profitable non-food crop in the world. Egypt is one of the greatest countries in producing cotton (Gossypium hirsutum L.) in the world. Many pests attacked cotton which reduced the ...

    Authors: Zakaria Abdelhalim Attia, Laila Ebada and Nasr Mohamed Abdelmaksoud

    Citation: Bulletin of the National Research Centre 2021 45:24

    Content type: Research

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  24. Meckel’s diverticulum is the most frequent congenital anomaly of the gastrointestinal tract. It can invert or invaginate into the small intestine lumen. It is usually associated with heterotopic tissue elements.

    Authors: Mahmoud Kamel, Hani Barsoum, Suzan Talaat and Eman Mustafa

    Citation: Bulletin of the National Research Centre 2021 45:23

    Content type: Case Report

    Published on:

  25. Goats, often associated with sheep, are a vital part of the national economy in many countries around the world, and goat farming contributes significantly to the family economy, sustainable livelihoods and po...

    Authors: Nadjet Amina Ouchene-Khelifi, Nassim Ouchene and Mohamed Lafri

    Citation: Bulletin of the National Research Centre 2021 45:22

    Content type: Research

    Published on:

  26. The objective of this work is to identify the most proper herbicidal treatment on sugar beet to compare different single weed control herbicide doses on sugar beet traits and associated weeds as well as yield ...

    Authors: E. M. Abd El Lateef, B. B. Mekki, M. S. Abd El-Salam and I. M. El-Metwally

    Citation: Bulletin of the National Research Centre 2021 45:21

    Content type: Research

    Published on:

  27. Climatic factors have been shown to influence communicable disease dynamics especially in tropical regions where temperature could swing from extreme heat and dryness to wet and cold within a short period of t...

    Authors: Eric N. Aidoo, Atinuke O. Adebanji, Gaston E. Awashie and Simon K. Appiah

    Citation: Bulletin of the National Research Centre 2021 45:20

    Content type: Research

    Published on:

  28. The Coronavirus disease 2019 (COVID-19) outbreak has become a challenging global issue after its emergence in December 2019. Due to the high adaptation of the virus, COVID-19 demonstrated a high transmission a...

    Authors: Ghadha Ibrahim Fouad

    Citation: Bulletin of the National Research Centre 2021 45:19

    Content type: Review

    Published on:

  29. Ecological risk assessment of the levels of polycyclic aromatic hydrocarbons in soils of the abandoned sections of Orji Mechanic Village, Owerri, Imo State, Nigeria. The main objective of the study was to dete...

    Authors: Francis Chizoruo Ibe, Chidi Edbert Duru, Benaiah Obinna Isiuku and Jacienta Ngozi Akalazu

    Citation: Bulletin of the National Research Centre 2021 45:18

    Content type: Research

    Published on:

  30. The conventional pesticide formulations have many side effects on environmental. These effects were due to the huge quantity of pesticides used. Using of nanopesticide formulations can be reduced the quantity ...

    Authors: Al-kazafy Hassan Sabry, Hamdy Abdel-Naby Salem and Hala Mohamed Metwally

    Citation: Bulletin of the National Research Centre 2021 45:16

    Content type: Research

    Published on:

  31. Attention-deficit hyperactivity disorder (ADHD) is one of the most common neurodevelopmental disorders, affects 5% of children worldwide and characterized by impaired inattention, hyperactivity and impulsivity...

    Authors: Olweya Mohammed Abd El Baaki, Enas Raafat Abd El Hamid, Safaa Taha Zaki, Amani Salah El Din Alwakkad, Rania Nabil Sabry and Eman Mohamed Elsheikh

    Citation: Bulletin of the National Research Centre 2021 45:15

    Content type: Research

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  32. A series of metal solutions such as chromium sulphate, lead sulphate and nickel sulphate were prepared, and varying concentrations were used to model the optimum conditions that would favour the removal of the...

    Authors: David Ebuka Arthur and Augustina Aroh Oyibo

    Citation: Bulletin of the National Research Centre 2021 45:14

    Content type: Research

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  33. Inclusion of the statistical approach in the planning stage of adequate experimental design is crucial for correctly achieving the required conclusions. Modern applied statistics has been used extensively in n...

    Authors: Mahfouz M. M. Abd-Elgawad

    Citation: Bulletin of the National Research Centre 2021 45:13

    Content type: Review

    Published on:

  34. This study aimed to evaluate the remaining amount of intra canal medicament in the root canals and their effect on microhardness of radicular dentine. In this study, ninety straight single-rooted teeth were us...

    Authors: Yousra Aly, Nada Omar, Engy M. Kataia, Maram E. Khallaf and Mohamed H. Zaazou

    Citation: Bulletin of the National Research Centre 2021 45:12

    Content type: Research

    Published on:

  35. The study evaluated the growth performance, haemabiochemical and antioxidant profile of two breeds of rabbits fed diets containing varying levels of Rhizopus stolonifer fermented cocoa pod husk meal (FCPHM). Coco...

    Authors: O. A. Olugosi, T. Ogunribido, J. O. Agbede and A. O. Ayeni

    Citation: Bulletin of the National Research Centre 2021 45:11

    Content type: Research

    Published on:

  36. The global warming has become a worldwide problem affecting adversely the human being and the productivity of the livestock. This study aimed to investigate the effect of seasonal heat stress on the incidence ...

    Authors: Amal M. Abo El-Maaty, Mohamed A. Aly, Mohamed S. Kotp, Amal H. Ali and Mahmoud A. El Gabry

    Citation: Bulletin of the National Research Centre 2021 45:8

    Content type: Research

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  37. This paper outlines the current status and mechanism for identifying dental implants, with emphasis on future direction and updated technology, and covers the existing factors influencing the identification of...

    Authors: Mohammad Ali Saghiri, Peter Freag, Amir Fakhrzadeh, Ali Mohammad Saghiri and Jessica Eid

    Citation: Bulletin of the National Research Centre 2021 45:7

    Content type: Review

    Published on:

  38. Wildlife reservoirs not only act as a source of infection for vectors but also serve as hosts for the vectors themselves, supporting their populations. Their public health significance in developing countries ...

    Authors: Kingsley Uchenna Ozioko, Chris Ikem Okoye, Patience Obiageli Ubachukwu, Raymond Awudu Agbu, Bede Izuchukwu Ezewudo and Celestine Osita Ezea

    Citation: Bulletin of the National Research Centre 2021 45:4

    Content type: Research

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  39. Hepatitis C virus (HCV) is a global medical condition that causes several life-threatening chronic diseases in the liver. The conventional interferon-free treatment regimens are currently in use by a blend of ...

    Authors: Stephen Ejeh, Adamu Uzairu, Gideon Adamu Shallangwa and Stephen E. Abechi

    Citation: Bulletin of the National Research Centre 2021 45:3

    Content type: Research

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  40. Susceptibility studies keep farmers, managers and household users informed and enhance breeding program’s testing against infestation and damage by storage insect pests. Therefore, laboratory tests were carrie...

    Authors: Chilee Okpile, Usman Zakka and Luke Chinaru Nwosu

    Citation: Bulletin of the National Research Centre 2021 45:2

    Content type: Research

    Published on:

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The NRC has to correspond to the country's key production and services sectors through the research conducted in different areas of science and technology, scientific consultation and training as well.

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The NRC mission is to conduct basic and applied research within the major fields of interest in order to develop production and services sectors.

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