Skip to main content

Articles

Page 13 of 25

  1. Extraction of the first premolar followed by canine retraction into the extraction space is a common treatment in orthodontics. Molar rotation occurs when they are used as anchorage units for the canine distal...

    Authors: Reem M. AlShazly, Ahmad F. Almohammad, Hend Salah ElSayed and Amr Ragab EL-Beialy
    Citation: Bulletin of the National Research Centre 2021 45:160
  2. The atmosphere is usually contaminated by heavy metals from different natural and anthropogenic sources. The levels of heavy metals in the atmosphere often become harmful and cause environmental pollution with...

    Authors: Bright Chigozie Ichu, Alexander Iheanyichukwu Opara, Emmanuel Nnamdi Ejike, Amarachi Udoka Nkwoada, Francis Chizoruo Ibe and Emmanuel Chuka Dioha
    Citation: Bulletin of the National Research Centre 2021 45:159
  3. There is an exponential rise in the use of farming chemicals in agricultural practices ostensibly to increase food production. The chewing of fresh khat leaves and shoots has spread across the world from ancie...

    Authors: Albert M. Oyugi, Joshua K. Kibet and John O. Adongo
    Citation: Bulletin of the National Research Centre 2021 45:158
  4. Panicle-feeding insects are a challenge in sorghum (Sorghum bicolor (L.) Moench) cultivation but most farmers do not protect the crop. Here, the effects of pest management in different sorghum cultivars on grain ...

    Authors: Jerry A. Nboyine, Kenneth Opare-Obuobi, Iddrisu Yahaya, Benjamin K. Badii, Francis Kusi, Asieku Yahaya and Gloria Adazebra
    Citation: Bulletin of the National Research Centre 2021 45:157
  5. Estuarine and marine water quality has remarkable importance because these water resources are used for multiple reasons for instance: transportation, tourism, recreation, and other human or economic ways to u...

    Authors: Ebenezer Aquisman Asare, Zaini Bin Assim, Rafeah Binti Wahi, Rajuna Bin Tahir and Eric Kwabena Droepenu
    Citation: Bulletin of the National Research Centre 2021 45:156
  6. Pet birds are housed and reared exclusively for ornamental use. These include psittaciformes (parrots, parakeets, budgerigars, love birds) and passeriformes (e.g. canaries, finches, sparrows, also called songb...

    Authors: Adelekan Oluseyi Okunlade, Oluwaseun Olanrewaju Esan and Akinlabi Oladele Ogunleye
    Citation: Bulletin of the National Research Centre 2021 45:155
  7. This study aimed to development new faba bean hybrids resistant to chocolate spot disease and using them in breeding programs. Six faba bean genotypes were crossed in a diallel system excluding reciprocals dur...

    Authors: M. M. F. Abdalla, M. M. Shafik, Heba A. M. A. Saleh, M. A. Khater and N. A. Ghazy
    Citation: Bulletin of the National Research Centre 2021 45:154
  8. Several mechanisms had been exhibited by plants to mitigate deleterious effects of salinity stress. A screen house experiment was conducted to investigate the effects of salinity stress on the activities of os...

    Authors: Foluso Ologundudu
    Citation: Bulletin of the National Research Centre 2021 45:152
  9. Strategic crops need to be screened from time to time to select the most tolerant and stable genotypes incompatible with environmental conditions. This research experiments were carried out to screen thirteen ...

    Authors: Samy A. A. Heiba, Samira A. Osman, Sara E. I. Eldessouky, Atef A. A. Haiba and Rania T. Ali
    Citation: Bulletin of the National Research Centre 2021 45:151
  10. High effectiveness of COVID-19 vaccines is essential for the pandemic control. This study systematically reviewed available evidence on effectiveness of ChAdOx1 and BNT162b2 vaccines in the general population,...

    Authors: Chinonyerem O. Iheanacho, Uchenna I. H. Eze and Emmanuel A. Adida
    Citation: Bulletin of the National Research Centre 2021 45:150
  11. Ilmenite and rutile are naturally occurring titanium-bearing heavy minerals. Sri Lanka consists of ilmenite and rutile in placer deposits mainly along the northeast coast. The commercial value of rutile is hig...

    Authors: T. Dilmi. U. Wijewardhana and Amila Sandaruwan Ratnayake
    Citation: Bulletin of the National Research Centre 2021 45:149
  12. Among the physical evidence, bloodstain is one of the most common biological pieces of evidence at the crime scene, especially in violent crimes. Bloodstains are frequently seen at the crime scene and can be e...

    Authors: Tuğba Ünsal Sapan, Işıl Tuna Erdoğan and Sevil Atasoy
    Citation: Bulletin of the National Research Centre 2021 45:148
  13. Actinomycetes are prolific producers of bioactive compounds which can be used to combat microbial infections. Microbial infections have resulted to increase in mortality and morbidity rates world-wide, especia...

    Authors: Olumuyiwa Moses Adeyemo, Mohammed Inuwa Ja’afaru and Feyisayo Victoria Adams
    Citation: Bulletin of the National Research Centre 2021 45:147
  14. This study was conducted to evaluate the effect of radiation exposure and storage time on the degree of conversion (DC%) and flexural strength (FS) of three different resin composites. In total, 90 disk-shaped...

    Authors: Ragia M. Taher, Lamiaa M. Moharam, Amin E. Amin, Mohamed H. Zaazou, Farid S. El-Askary and Mokhtar N. Ibrahim
    Citation: Bulletin of the National Research Centre 2021 45:146
  15. The areas of application of natural fibres have gained popularity in recent times due to their attractive advantages when compared with other materials of engineering. These advantages include lightness, cost-...

    Authors: Raphael Stone Odera, Onukwuli Dominic Okechukwu, Ernest Mbamalu Ezeh, Mathew Chukwudi Menkiti and Peter Chinedu Agu
    Citation: Bulletin of the National Research Centre 2021 45:145
  16. The literature shows that ABO blood groups and demographic characteristics influence susceptibility to type 2 diabetes mellitus (T2DM) and may be used to stem the rising incidence of the disease. However, thes...

    Authors: Tajudeen O. Yahaya, Esther O. Oladele, Mari B. Mshelia, Mutiu O. Sifau, Oluwatosin D. Fashola, M. D. A. Bunza and Josephine Nathaniel
    Citation: Bulletin of the National Research Centre 2021 45:144
  17. Daucus carota subsp. sativus (Black carrots) are underutilized in context to their nutritional properties. In this study, Kanji, a naturally fermented probiotic beverage, was prepared using Daucus carota subsp. s...

    Authors: Chetna Sharma, Param Pal Sahota and Sarabjit Kaur
    Citation: Bulletin of the National Research Centre 2021 45:143
  18. Virtual anthropology in estimating stature through multislice computed tomography scanning is important for forensic cases and mass disasters. Regression formulae generated directly from other post-cranial ske...

    Authors: Poh Soon Lai, Mohamad Helmee Mohamad Noor and Nurliza Abdullah
    Citation: Bulletin of the National Research Centre 2021 45:142
  19. The choice between extraction and expansion treatment is an endless debate in orthodontics. Ethnic and secular variations showed that there was a change in  arch perimeter over the last 50 years. Accordingly,...

    Authors: Omnia A. Elhiny, Mohammed Abou Elyazied and Ghada A. Salem
    Citation: Bulletin of the National Research Centre 2021 45:141
  20. A novel corona virus is formally named as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which results in causing coronavirus disease 2019 (COVID-19). It is the latest prevalent pandemic worldwi...

    Authors: Sankari Mohan, M. Reshma Anjum, Anusha Kodidasu, T. V. N. Sai Prathyusha, Nunna Venkata Mrunalini and B. Kishori
    Citation: Bulletin of the National Research Centre 2021 45:139
  21. Gastroenteritis is a common infectious disease in children, which results in high mortality and morbidity, especially in resource-poor countries. This study presents the selected main gastroenteritis causing b...

    Authors: Mohammad Sharif Uddin, Md. Mijanur Rahman, Md. Omar Faruk, Asma Talukder, Md. Imranul Hoq, Suman Das and K. M. Shariful Islam
    Citation: Bulletin of the National Research Centre 2021 45:138
  22. This study attempts to review the role of slaughter facilities management of all zoonotic diseases encountered at the abattoirs as well as the safety of meat produced for public consumption in abattoirs in Nig...

    Authors: Salisu Ibrahim, Bilkisu Yunusa Kaltungo, Hajara Buhari Uwale, Alhassan Yunusa Baba, Shehu Na-Allah Saidu, Farouk Umar Mohammed and Hashimu Mohammed Dahiru
    Citation: Bulletin of the National Research Centre 2021 45:137
  23. Previous studies on iron with folic acid supplementation and low birth weight indicated different findings. The aim of the current systemic review and meta-analysis was to examine the relationship between iron...

    Authors: Andualem Zenebe, Kaleab Tesfaye Tegegne, Berhanu Bifato and Abiyu Ayalew Assefa
    Citation: Bulletin of the National Research Centre 2021 45:135
  24. Coronavirus Disease Pandemic 2019 has a pervasive effect on all health aspects include psychological and mental health. This study aimed to assess the hidden stressful impact of COVID-19 pandemic on Egyptian c...

    Authors: Amira Sayed El Refay, Shaimaa A. Hashem, Hend H. Mostafa, Iman H. Kamel and Lobna S. Sherif
    Citation: Bulletin of the National Research Centre 2021 45:134
  25. The COVID-19 respiratory illness caused by the SARS-CoV-2 has been a major cause of morbidity and mortality worldwide since the first reported case in Wuhan, China. A year has passed since pandemic began, and ...

    Authors: Emmanuel Kagning Tsinda and Gideon Sadikiel Mmbando
    Citation: Bulletin of the National Research Centre 2021 45:133
  26. Women's pain satisfaction post-cesarean section remains a challenge. Accurate assessment of pain severity of post-cesarean section helps to choose the most appropriate anesthetic approach, drug, and dose, as w...

    Authors: Sondos M. Salem, Mazen Abdel-Rasheed, Mohammad A. Gouda and Sameh Salama
    Citation: Bulletin of the National Research Centre 2021 45:132
  27. Medicinal plants are used to manage pain and inflammatory disorders in traditional medicine. A scientific investigation could serve as a basis for the determination of molecular mechanisms of antinociceptive a...

    Authors: Abdullahi Garba Usman, Mubarak Hussaini Ahmad, Rabi’u Nuhu Danraka and Sani Isah Abba
    Citation: Bulletin of the National Research Centre 2021 45:128
  28. In this work, an economic study for production reverse osmosis (RO) membrane from a blend of polyvinylchloride (PVC) with cellulose acetate (CA) was investigated. The model for predicting RO membrane performan...

    Authors: A. El-Gendi, H. Abdallah and A. Amin
    Citation: Bulletin of the National Research Centre 2021 45:126
  29. Cadmium (Cd) is a known metallohormone which mimics the action of steroid hormones with adverse effect on testicular function. It is highly toxic and a prevalent environmental contaminant with no conventional ...

    Authors: Remigius Ibe Onoja, Chinwe Uzoma Chukwudi, Emmanuel Uchechukwu Ugwueze, Davinson Chuka Anyogu, Wilson Obidah and Benjamin Ifechukwu Emesiani
    Citation: Bulletin of the National Research Centre 2021 45:125
  30. The use of metal-containing and antimicrobial compounds is a common practice in aquaculture operations in Nigeria. Only a few studies have focused on the impact of these chemicals on metal and antibiotic resis...

    Authors: Abimbola Olumide Adekanmbi, Ololade Grace Olawuni and Adedolapo Victoria Olaposi
    Citation: Bulletin of the National Research Centre 2021 45:122
  31. Climate change and increasing demand in non-agricultural sectors profoundly affect the availability and quality of water resources for irrigated agriculture. The FAO AquaCrop simulation model provides a sound ...

    Authors: Rajesh Kumar Soothar, Ashutus Singha, Shakeel Ahmed Soomro, Azhar-u-ddin Chachar, Faiza Kalhoro and Md Arifur Rahaman
    Citation: Bulletin of the National Research Centre 2021 45:121
  32. This study aimed at assessing the effect of different kinematics as well as different instrument designs on efficiency of cutting of two heat-treated nickel–titanium systems. Forty resin canals with 30°-angle ...

    Authors: Engy M. Kataia, Mohamed Mokhtar Nagy, Mohamed M. Kataia and Hala Fayek Khalil
    Citation: Bulletin of the National Research Centre 2021 45:120
  33. Sweet pepper is considered one of the most important vegetable crops cultivated for local consumption and exportation. Under greenhouse conditions, the effects of different rates of yeast and compost tea on ve...

    Authors: Hanaa Ali Abd-Alrahman and Fatma Sayed Aboud
    Citation: Bulletin of the National Research Centre 2021 45:119
  34. The plant Hymenocardia acida (Euphorbiaceae) is utilized as herbal preparation against diarrhoea, dysentery and other diseases. We aimed to determine the antidiarrhoeal potentials of Hymenocardia acida (MEHA) ste...

    Authors: Abba Musab Usman, Nuhu Muhammad Danjuma, Jamilu Ya’u, Muslim Muhammad Ahmad, Zakariyya Alhassan, Yusuf Muhammad Abubakar and Mubarak Hussaini Ahmad
    Citation: Bulletin of the National Research Centre 2021 45:118
  35. Salinity is one of the major limiting abiotic stresses that decrease crop production worldwide. To recommend genotypes for cultivation under saline stress conditions, a comprehensive understanding of the genet...

    Authors: Alireza Pour-Aboughadareh, Sara Sanjani, Hamidreza Nikkhah-Chamanabad, Mohammad Reza Mehrvar, Ameneh Asadi and Ashkboos Amini
    Citation: Bulletin of the National Research Centre 2021 45:117
  36. Application of organic amendments could improve soil properties as well as controlling of soil-borne pathogens. Soil amendments with dry powders of six plant species materials, i.e. caraway seeds, fennel seeds, g...

    Authors: Hassan Abd-El-Khair and Wafaa M. A. El-Nagdi
    Citation: Bulletin of the National Research Centre 2021 45:116
  37. Tetracarpidium conophorum is one of the numerous folklore medicinal plants for managing diabetes but the mode of action and bioactive compounds responsible for the antihyperglycemic property are missing in litera...

    Authors: Bamidele Stephen Ajilore, Olubukola Sinbad Olorunnisola and Abiodun Olusoji Owoade
    Citation: Bulletin of the National Research Centre 2021 45:115
  38. The release of pollutant gases into the atmosphere as a result of anthropogenic activities exert effect on biological systems at many levels. Combustion engines such as those in vehicles and power generators p...

    Authors: Abiola Titilola Aborisade, Kayode Peter Balogun and Oluwole Olakunle Oladele
    Citation: Bulletin of the National Research Centre 2021 45:113
  39. The new coronavirus disease appeared at the end of 2019, and it is now a global problem over the world. There are multiple epidemiologic indicators used for discussing the spread of pandemics, one of these ind...

    Authors: Marwan Al-Raeei
    Citation: Bulletin of the National Research Centre 2021 45:112
  40. An amendment to this paper has been published and can be accessed via the original article.

    Authors: Ibrahim Abdallah, Alia Amer and Dalia El-Hefny
    Citation: Bulletin of the National Research Centre 2021 45:108

    The original article was published in Bulletin of the National Research Centre 2021 45:77

Associated Society

New Content Item

National Research Centre

NRC Vision

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.

NRC Mission

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

Annual Journal Metrics

2023 Speed
14 days submission to first editorial decision for all manuscripts (Median)
67 days submission to accept (Median)

2023 Usage 
1,233,773 downloads
465 Altmetric mentions 

Egyptian Knowledge Bank (EKB) Journals

New Content Item (1)

Visit our collection of Egyptian journals.