col blocks we are bridge builder col blocks
COVID answers in Scientific Journals all over the world


107 Results       Page 1

 [1] 
Scientific Research Publishing, Inc.: OALib
  original article Date Title Authors   All Authors
1 [GO] 2025―Sep―08 Does COVID-19 Affect Third Molar Surgery Complications? -A Retrospective Cross-Sectional Study in Hospital Segamat of Southern Malaysia Ivy Yee Fen Cheng, Nur Diyanah Ab Wahid, Ramizah Rozaimee, Nowrozy Kamar Jahan
2 [GO] 2025―May―27 Effect of the COVID-19 Pandemic on Maternal Mortality: A Retrospective Study in a Tertiary Hospital in Northern Ghana Ana Maria Simono Charadan, Baribe Duuti, Abraham Babatuiamu Titigah
3 [GO] 2025―Apr―09 Cluster Headache and COVID-19, a Retrospective Study on Disease Evolution during the Pandemic Marco Bolchini, Matteo Cortinovis, Paola Zavarise, Michele Gennuso, Paola Merlo, Natascia Beretta, Giorgio Dalla Volta
4 [GO] 2024―Dec―31 Barrier Gestures Regarding Covid-19: Knowledge, Attitudes and Practices of the Population of the Bobozo Health District in Kananga in the Democratic Republic of Congo Pascal Pambi Mukanga, Théophile Mukonkole Yalumami, Dominique Ilunga Masumbuku, Célestin Ngalamulume wa mpesa, Jean Paul Sangunu Samapangu, Thierry Nshimbi L몺, et al. (+10)
5 [GO] 2024―Dec―05 Fractional Order Model for Co-Infection of Streptococcus pneumoniae and COVID-19 with Saturated Incidence Force of Infection Chiekezi Zephaniah Opara, Ephraim Ngozi Erumaka, Nneka Onyinyechi Iheonu, Nnamdi Nonso Araka
6 [GO] 2024―Nov―26 Risk Management in the Aviation Industry: Case Study of the Nigerian Aviation Industry Post Covid-19 Pandemic Bolanle Oyedokun
7 [GO] 2024―Nov―21 Factors Impacting K-12 Students’ Academic Achievement in Urban Areas During the Pandemic Michael Kuran, Jason Rhode, Ximena Burgin, Niyazi Ekici
8 [GO] 2024―Nov―12 Impact of COVID-19 on Malaria: Clinical Changes before and during the COVID-19 Pandemic -A Retrospective Study in a Reference Center Volatiana Andriananja, Etienne Rakotomijoro, Johary Andriamizaka, Andry Elody Christophe, Rado Lazasoa Andrianasolo, Mamy Jean De Dieu Randria
9 [GO] 2024―Aug―26 Simultaneous Analysis of the Impact of Vaccination and Compliance with Prevention Measures on the Transmission Dynamics of COVID-19 Abraham Sassou, Ezekiel Dangbé, Richard Guiem, Séraphin Djaoué, Irépran Damakoa, Antoine Perasso
10 [GO] 2024―Jul―26 COVID-19 Vaccine Acceptance and Hesitancy among Healthcare Workers at a Teaching Hospital in Zambia: Findings and Implications Steward Mudenda, Banji Moonga, Maisa Kasanga, Victor Daka, Ngoni Veddie Muzondo, Ruth Lindizyani Mfune, et al. (+4)
11 [GO] 2024―May―31 Prevalence of Mental Disorders among Moroccan Students during the COVID-19 Pandemic Sarah Drider, Mohammed Ouhssine
12 [GO] 2024―May―23 Knowledge, Attitudes and Practices towards COVID-19 Vaccination: Comparison Study between Makerere University Medical Students and Katanga Slum Residents, in Uganda Sanjanaa Srikant, Darshit Ashok Dave, Sserubogo Samuel Gordon, Kyabaggu Christopher, Okello Solomon Roy Jasper, Nabunje Joletta Eleanor, et al. (+6)
13 [GO] 2024―May―11 Observation of the Therapeutic Effect of Ultrasound-Guided Stellate Ganglion Block on Sleep Disorders in Patients Recovered from COVID-19 Pu Chen, Yuping Hu, Nana Zhang
14 [GO] 2024―May―07 Attitudes, and perceptions of COVID-19 vaccines and Acceptance to receive COVID-19 vaccine among healthcare workers in Yaounde, Cameroon Tendongmo Kinsley Aka, Sylvester Ndeso Atanga, Seraphine Nkie Esemu, Lucy Mande Ayamba Ndip
15 [GO] 2024―Apr―29 Guillain-Barré Syndrome Following AstraZeneca COVID-19-Vaccination: Two Cases Report Study Soukaina Benlamkadam, Yahya Naji, Yasmina Zakaria, Nissrine Louhab, Mohamed Chraa, Najib Kissani
16 [GO] 2024―Apr―25 Spatial-Temporal Assessment of Changes in Aerosol Optical Properties Pre, during, and Post COVID-19 Lockdowns over Kenya, East Africa Peter M. Mutama, John W. Makokha, Festus B. Kelonye, Geoffrey W. Khamala
17 [GO] 2024―Mar―14 Anxiety, Depression, and Associated Factors among Teachers during the COVID-19 Pandemic: A Multi-Centre Cross-Sectional Study in Zambia Steward Mudenda, Maisa Kasanga, Scott Kaba Matafwali, Roland Nnaemeka Okoro, Ruth Lindizyani Mfune, Tina Haanyanga, et al. (+8)
18 [GO] 2024―Feb―28 Knowledge, Attitudes and Practices of COVID-19: A Case Study of Navakholo Sub-County, Kakamega, Kenya Maximilla Wanzala, Elizabeth Omukunda, Stella Wanjala, Micky Olutende Oloo
19 [GO] 2024―Feb―18 The Impact of COVID-19 on the Learning Experiences of Higher Education Students in the New Zealand Tertiary Institutions Olufemi Muibi Omisakin, Indrapriya Kularatne
20 [GO] 2023―Oct―31 Impact of COVID-19 on the Use of Public Transport Differs According to Social Class: A Case Study of Donostia-San Sebastian City Bus System Itziar Gurrutxaga, Usue Oses, Jon Iradi
21 [GO] 2023―Aug―25 Adapting Employee Performance Management in the Face of the COVID-19 Pandemic Zukiswa Roboji, Kofi Nkonkonya Mpuangnan, Leungo Watson-Ben, Christopher Dick-Sagoe
22 [GO] 2023―May―15 Covid-19 Associated Mucormycosis and Its Surgical Sequelae: A Systematic Review of the Literature Rajae Zeroual, Imane Alansari
23 [GO] 2023―Apr―23 Impacts and Adjustments: Life of Students in Universities in Times of COVID-19 Pandemic Mary Joy P. Cruz
24 [GO] 2023―Apr―11 Nursing Leadership and Management of Nursing Staff Burnout during the COVID-19 Pandemic Michael Boadi Gyekye
25 [GO] 2023―Feb―21 Sources of Funding for the Social Sector: Case of the COVID-19 Pandemic Period Gloria Angela Mukova
26 [GO] 2023―Feb―10 An Enhanced Healthcare Integration System Based on Cloud Computing during the Coronavirus Crisis Samah A. Massadeh, Rose M. Al-Qasem, Nawal A. Al-Zabin, Sara I. Al-Issa
27 [GO] 2023―Jan―18 Analyzing the Impact of Age and Gender on COVID-19 Deaths Using Two-Way ANOVA Azad Abdulhafedh
28 [GO] 2022―Dec―30 Rethinking Public Health Insurance Coverage in Kenya in the Wake of a Global Pandemic Nicholas Walter Otieno Ajwang
29 [GO] 2022―Dec―22 Taking Paracetamol and Vitamin C or Ibuprofen and Vitamin C Every Day Could Be a Simple Way to Prevent COVID-19 Infection Gao-De Li
30 [GO] 2022―Dec―21 COVID-19 Vaccine Hesitancy in Lebanon Mariam Mando, Aseel Al Khansa, Yousef Zaitoun, Mariam Chokor, Bilal Elchehimi, Riham Dweik, et al. (+5)
31 [GO] 2022―Dec―15 WTO Trade Facilitation Adoption Challenges in East African Trade Region during COVID-19 Crisis Beryl N. Olubandwa
32 [GO] 2022―Nov―24 Guillain-Barré Syndrome Following AstraZeneca COVID-19 Vaccine Ali Mikdad Hassan, Syeda Marium, Paras Yousuf, Asad Akram Farooqi, Uzair Yaqoob
33 [GO] 2022―Nov―16 Management of Adhesive Capsulitis of the Shoulder: Recommendation for Home Exercises Program during COVID-19 Pandemic Amine Kalai, Mohamed Guedria, Amr Chaabeni, Zohra Ben Salah Frih, Anis Jellad
34 [GO] 2022―Oct―27 Antioxidants and Long Covid Patrick Chambers
35 [GO] 2022―Oct―26 Peripheral Facial Paralysis Post-Vaccination with COVID-19: About Two Cases Observed at the University Hospital of Conakry Mohamed Lamine Condé, Souleymane Djigué Barry, Mohamed Lamine Touré, Mohamed Tafsir Diallo, Mouloukou Souleymane Doumbouya, Malé Doré, et al. (+8)
36 [GO] 2022―Sep―19 The Intercultural Competence of Chinese Undergraduate Students Studying in Germany in the Context of Post-COVID-19 Pandemic: An Empirical Report from a Double-First-Class University in Shanghai Yinan Zhang, Yujie Chen
37 [GO] 2022―Sep―16 Link between COVID-19 and Substance Abuse among University Students Edwin Kadima Wamukoya, Micky Olutende, David Kaniaru, Lilian Soibe, Maximilla Wanzala
38 [GO] 2022―Sep―15 A Study of Multimodal Metaphors in Newspaper Cartoons Representing COVID-19 Tingyu Chu
39 [GO] 2022―Sep―08 Literature Review on the Barriers to Online Learning during Covid-19 Pandemic Nam Le
40 [GO] 2022―Aug―26 Bounding Pandemic Spread by Heat Spread Teddy Lazebnik, Uri Ital
41 [GO] 2022―Aug―25 The Impact of the Lockdown during Covid-19 Outbreak on the Sleep Quality of People with Bipolar Disorder: A Systematic Review Lydia Mourtou, Triada-Konstantina Papapanou, Flora Bacopoulou, Panagiotis Ferentinos, Christina Kanaka-Gantenbein
42 [GO] 2022―Aug―24 Influences and Strategies of Online Teaching on English Major Students’ Effective Learning under Pandemic Yuanyuan Lou, Lingling Lou
43 [GO] 2022―Jul―27 Acute Mesenteric Thrombosis in COVID-19: A Case Report Sakit Fouad, Krimou Hicham, Errabi Nizar, Cisse Mohammed, El Kaoukabi Abdessamad, Belhamidi Said, et al. (+5)
44 [GO] 2022―Jul―26 Literature Review: “COVID-19 Pandemic: Where to Pharmacy Education?” Pias Tomupei Musiza, Abubaker Qutieshat
45 [GO] 2022―Jul―25 Knowledge Attitudes and Practices of Students Regarding the Vaccine against Covid-19. Case of Students Living on the University Campuses of the University of Lubumbashi Martin Banza Mwana Bute, Cathy Kahite Lugoma, Yannick Mutombo Mupanda, Veddy Bonga Numba Watanga, Mbuyu Umba Djino, Placide Kangweji Mulaji, et al. (+13)
46 [GO] 2022―Jul―22 The Correlation between Lymphopenia and CT Findings in Suspected COVID-19 Cases: A Prospective Study Khaled Leon, Bassem Zarif, Nadia Youssef Riad, Eman Ahmed Ibrahim Ismail, Ahmed Badr, Ahmed Elgebaly
47 [GO] 2022―Jun―22 A Study on the Role of Music in the Context of the COVID-19-Focusing on the Comparison of Chinese and Japanese Music Culture Tian’ang Zhou, Yanyao Xu, Siyou Wang, Yuhan Jiang, Haiyan Liang
48 [GO] 2022―May―27 Long Covid, Short Magnesium Patrick W. Chambers
49 [GO] 2022―Apr―14 COVID-19 Vaccine: Review of the Mechanism of Action of Different Types of Vaccine Li-Ann Wong, Christina Gertrude Yap, Nowrozy Kamar Jahan, Naganathan Pillai
50 [GO] 2022―Mar―23 Attitude towards Prescribing Legal Action on Domestic Violence against Women: Context of Bangladesh during COVID-19 Pandemic Period Abdur Rab, Golam Mostofa
51 [GO] 2022―Mar―18 Stress among Health Care Workers (Doctors and Nurses) as an Impact of COVID-19 Pandemic Ambreen Goni, Md Jahid Hasan, Kornelia Kotseva
52 [GO] 2022―Mar―17 A Comparative Study of Conceptual Metaphors in English and Chinese COVID-19 News Headlines Yilu Li
53 [GO] 2022―Feb―25 English Language Education in the Mainland of China: A Review of Selected Research under the COVID-19 Pandemic (2020-2021) Changsheng Rong, Maria Shu Hong Bee Abdullah
54 [GO] 2022―Feb―17 Perspectives of COVID-19 Survivors on the Treatment Experience in Nigeria Oluremilekun Comfort Kusimo, Samuel Ogiri, Haruna Ismaila Adamu, Ufuoma Aduh
55 [GO] 2022―Feb―16 Adaptation to Stay-at-Home Situation during COVID-19 Pandemic: A Study on the Faculty Members of the Universities in Bangladesh Tasnim Jerin, Hafiz Ashraful Haque
56 [GO] 2022―Jan―26 COVID-19: From Cough to Coffin Patrick W. Chambers
57 [GO] 2022―Jan―25 A Rare Case Series of Cerebral Venous Thrombosis and Stroke in Young Male COVID-19 Positive Patients without Significant Comorbidities and Importance of Various Laboratory Investigations Hardik Lalit Siroya, Bhagavatula Indira Devi, Sachin Jose Pulickal, Dhanjaya Ishwar Bhat
58 [GO] 2022―Jan―19 The Extent of the Challenges in Online Learning during the COVID-19 Pandemic Reynaldo Abrea Cabual, Ma. Minisa Aquino Cabual
59 [GO] 2021―Dec―27 Mathematics Resilience and Achievement Goals: Exploring the Role of Non-Cognitive Factors to Mathematics Performance of University Students amidst of Pandemic Christopher R. Vergara
60 [GO] 2021―Dec―24 A Biophysical Approach to SARS-CoV-2 Pathogenicity Claudio Messori
61 [GO] 2021―Dec―13 Impact of the COVID-19 Pandemic on the Heart Disease Management of Health Structures in Senegal Taha El Jirari, Sidy Lamine SY, Simon Joel Manga, Modou Seye, El Hadj Mbacké Sarr, Ibrahima Bara Diop
62 [GO] 2021―Nov―29 Statistical Survey of Students’ Performance: Online Education to COVID-19 in Bangladesh Tanjea Ane, Tabatshum Nepa
63 [GO] 2021―Nov―26 E-Learning: Teaching Effectiveness to Conventional Teaching in Undergraduates amid COVID-19 Pandemic Evan Taja-on, Roseve Miras, Christian Jurolan
64 [GO] 2021―Nov―16 Basigin Binds Spike S on SARS-CoV2 Patrick William Chambers
65 [GO] 2021―Oct―22 A Systematic Review of Obstetrical Outcomes in COVID-19 Positive Pregnant Women Jiexi Teoh, Junwen Khong, Sharifah Shahirah Syed Hashim, Nowrozy Kamar Jahan
66 [GO] 2021―Oct―22 Neonatal Outcomes of COVID-19 Positive Pregnant Women: A Systematic Review Junwen Khong, Jiexi Teoh, Sharifah Shahirah Syed Hashim, Nowrozy Kamar Jahan
67 [GO] 2021―Oct―19 The Socio-Economic Impact and Implications of Covid-19 in Bangladesh: A Sociological Study According to Sociological Theories and Social Determinants Moriom Nasrin
68 [GO] 2021―Sep―28 A Comparative Study of International Reports on COVID-19-Taking China Daily and the New York Times as Examples Qingyun Han, Pianpian Huang
69 [GO] 2021―Sep―24 The Impact of Socioeconomic Variables Status on Bladder Cancer Treatment Outcomes during the COVID-19 Pandemic Chamseddine Barki, Hanene Boussi Rahmouni, Salam Labidi
70 [GO] 2021―Aug―24 Uncharted Territory-Rehabilitation Potential in a Prolonged COVID-19 ICU Stay Complicated by PRES Samuel Moody, Vinay Parambil, Fayez Morcos
71 [GO] 2021―Aug―03 A Critical Discourse Analysis of Reports about China on the COVID-19 Pandemic in The New York Times Junfang Mu, Hongyue Zhao, Guang Yang
72 [GO] 2021―Jul―28 The Second Wave of Covid-19 and the Present and Continuing Challenges of the Health and Care System from the Side of a Numerical Analysis Mariam Almahdi Mohammed Mu’lla, Munirah Oudah Alanazi
73 [GO] 2021―Jul―27 The Implementation of the Deep Neural Network in Predicting the Coronavirus 2019 (COVID-19) Based on Laboratory Findings in Children Akpofure A. Enughwure, Rabia Al Mamlook
74 [GO] 2021―Jun―30 Plastic Waste Pollution Worsen by the COVID-19 Pandemic: Substitutional Technologies Transforming Plastic Waste to Value Added Products Djamel Ghernaout, Noureddine Elboughdiri
75 [GO] 2021―Jun―28 Air Quality Improvement from COVID-19 Lockdown in the East African Community: Evidences from Kampala and Nairobi Cities Juliet Angom, Christopher Angiro, Timothy Omara
76 [GO] 2021―Jun―07 Searching if SARS-CoV-2 Subsists Following the Disinfection of Potable Water Djamel Ghernaout, Noureddine Elboughdiri
77 [GO] 2021―May―28 Consumers Reaction and Response to Covid-19 Nsiah Abigail, Jianghui Zheng
78 [GO] 2021―May―27 A Mathematical Model for Covid-19 Disease Transmission Dynamics with Impact of Saturated Treatment: Modeling, Analysis and Simulation Idisi I. Oke, Yakub T. Oyebo, Olamide F. Fakoya, Vigbe S. Benson, Yusuf T. Tunde
79 [GO] 2021―May―27 Exploring What Lies Ahead in the Field of Disinfecting Coronavirus Djamel Ghernaout, Noureddine Elboughdiri
80 [GO] 2021―May―26 Domino Effect of Coronavirus in Nigeria. An Overview of the Socioeconomic, Religious and Educational Perspectives Abinotami Williams Ebuete, Okpoebi Kenneth Berezi, Lucky E. Ndiwari, Standfast Isiya
81 [GO] 2021―May―18 Association of Demographic and Occupational Factors with SARS-CoV-2 Vaccine Uptake in Kenya Bertha A. Ocholla, Obed Nyangena, Herbert K. Murayi, Jane W. Mwangi, Steve K. Belle, Phanice Ondeko, Rebecca Kendagor
82 [GO] 2021―Apr―30 The Trust in Online Shopping during COVID-19: Case Study from Kosovo Abetare Prebreza, Blerona Shala
83 [GO] 2021―Apr―14 Digital Divide in Times of Pandemic among Teacher Education Students Alfredo M. Esteban Jr., Mary Joy P. Cruz
84 [GO] 2021―Apr―12 Discrimination of the Socio-Economic Impact of the Corona Virus Disease Pandemic in Kinshasa, in the Democratic Republic of the Congo: A Population-Based Cross-Sectional Survey Aliocha Nkodila Natuhoyila, Charles Mbendi Nlombi, Hervé Alex Tukadila Kabangi, Gilbert Mananga Lelo, Philippe Lukanu Ngwala, Benjamin Longo Mbenza
85 [GO] 2021―Mar―19 Research on the Protection Countermeasures for Asymptomatic Patients in COVID-19 Yan-Yan Wu, Chang-Zheng Chen, Rong-Zhen Huang, Guo-Qing Xu, Bin-Wen Xia, Yang Yang
86 [GO] 2021―Jan―28 Navigating Terrorist Maneuvers in the Grid of COVID-19 Communities Francis M. Kabosha
87 [GO] 2021―Jan―28 COVID-19 in Sri Lanka and Work Setting Changes Anuruddika K. K. R. Jayathilaka
88 [GO] 2021―Jan―05 The Safety and Security Measures of the Selected Universities in Nueva Ecija, Philippines: Its Combat to COVID-19 Pandemic Jennilyn C. Mina, Januaryn Jose B. Aydinan, Romeo B. Campos, Shirley P. Ayeo-eo
89 [GO] 2020―Dec―30 Supportive Approach to Covid-19 Treatment with Acupuncture Practice Mehmet Tugrul Cabioglu, Caner Horzum, Saltuk Cabioglu
90 [GO] 2020―Nov―26 Mental and Physical Health and Hygienic, Nutritional and Daily Habits during Quarantine in COVID-19 Pandemic Carol Dillon, Patricio Perez Leguizamon, Diego Castro, Veronica Guelar, Virginia Garcia, Monica Feldman, et al. (+6)
91 [GO] 2020―Nov―17 Impact of COVID-19 Pandemic Outbreak: CO2 and SO2 Emission Reduction over China Abel Nsabimana, Edward Hingha Foday Jr
92 [GO] 2020―Nov―13 Combating the Spread of COVID-19, the Challenges Faced and Way forward for the International Community: A Review Theophilus Pius, Saphurah Nabaasa, Nicholas Kusiima, Ejike Daniel Eze, Blessing Jacob Yashim, Ssebuufu Robinson
93 [GO] 2020―Oct―28 Low Dose Indomethacin in the Outpatient Treatment of COVID-19 in Kidney Transplant Recipients-A Case Series Arumugham Kanakaraj, Rajan Ravichandran
94 [GO] 2020―Sep―29 Research on the Elderly Education Model Based on Autonomous Learning Groups under the Regular Situation of COVID-19 Epidemic Prevention and Control Xianwei Xia, Hong Yu
95 [GO] 2020―Aug―25 Applications of Artificial Intelligence in Combating Covid-19: A Systematic Review Akpofure A. Enughwure, Isaac C. Febaide
96 [GO] 2020―Aug―21 COVID-19 Patients with Cardiovascular Diseases: Important Laboratory Markers to Predict Prognosis Amr Elkammash, Nourhan Degheidy, Saleh Kanaan, Fairouz Farag, Mian Ahmed, Ahmed Khalifa
97 [GO] 2020―Aug―20 Logistic Approach to COVID-19 Epidemic Evolution in Brazil Altair Souza de Assis, Vinicius Werneck de Carvalho
98 [GO] 2020―Aug―20 Estimated Benefits of Incremental Suppression of Covid-19 Spread Chi Keung Woo, Kang Hua Cao, Yun Lyndon Liu, Qiqi Li
99 [GO] 2020―Aug―17 “The Extent of the Link between the Hegemony of the Major Powers Scientifically and Economically and Novel Coronavirus Spread”-A Study within the Framework of the Public International Law Essam El-Din Mohamed Ibrahim
100 [GO] 2020―Jul―07 Non-Carcinogenic Genotoxic Drugs Could Be Used to Prevent and Treat COVID-19 Gao-De Li
101 [GO] 2020―Jun―30 COVID-19: Transmission, Laboratory Diagnosis and Treatment Options Ebidor Ufoumanefe Lawani-Luwaji, Augustine Oziegbe Akhogba
102 [GO] 2020―Jun―08 COVID-19 Pandemic, Oil Price Slump and Food Crisis Nexus: An Application of ARDL Approach Kabiru Saidu Musa, Rabiu Maijama’a, Nafisa Mohammed, Muktari Yakubu
103 [GO] 2020―May―25 Controlling COVID-19 Pandemic through Wastewater Monitoring Djamel Ghernaout, Badia Ghernaout
104 [GO] 2020―May―15 Urgent Proposals for Disinfecting Hospital Wastewaters during COVID-19 Pandemic Djamel Ghernaout, Noureddine Elboughdiri
105 [GO] 2020―Apr―28 Disinfecting Water: Plasma Discharge for Removing Coronaviruses Djamel Ghernaout, Noureddine Elboughdiri
106 [GO] 2020―Apr―22 Environmental Engineering for Stopping Viruses Pandemics Djamel Ghernaout, Noureddine Elboughdiri
107 [GO] 2020―Jan―17 Road Crashes: An Anthropic Pandemic, Case of the City of Lubumbashi Simon Ilunga Kandolo, Timothy Craig Hardcastle, Charles Matungulu Matungulu, Ghislain Mashini Ngongo, Balthazar Ngoy Fiama Bitambile, Jean Baptiste Kakoma Sakatolo Zambeze, Benjamin Kabyla Ilunga
 [1] 

107 Results       Page 1


[de][en]

Last change 2025―Jul―29 14:55:09 UTC

© Daten-Quadrat 2022       Done in 0.005 sec