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Dynamics of a multi-mode maximum entangled coherent state over an amplitude damping channel

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Chinese Physics B 2011年第11期20卷 67-73页

作者： A.el Allati Y.hassouni N.Metwally Faculté des Sciences Laboratoire de Physique Theorique URAC 13Université Mohammed V-Agdal The Abdus Salam International Centre for Theoretical Physics Mathematics Department College of ScienceUniversity of Bahrain Mathematics Department Faculty of ScienceSouth Valley University

The dynamics of the maximum entangled coherent state traveling through an amplitude damping channel is investigated. For small values of the transmissivity rate, the traveling state is very fragile to this noise channel, which suffers from the phase flip error with high probability. The entanglement decays smoothly for larger values of the transmissivity rate and speedily for smaller values of this rate. As the number of modes increases, the traveling state over this noise channel quickly loses its entanglement. The odd and even states vanish at the same value of field intensity.

关键词： entanglement quantum communication decoherence coherent states

Quantum Steganography via Greenberger-Horne-Zeilinger GHZ_4 State

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Communications in Theoretical Physics 2012年第4期57卷 577-582页

作者： A.el Allati M.B.Ould Medeni Y.hassouni Facultédes Sciences Département de PhysiqueLPT-URAC-13UniversitéMohammed V-Agdal.Av.Ibn BattoutaB.P.1014RabatMaroc The Abdus Salam International Centre for Theoretical Physics TriesteItaly Facultédes Sciences Laboratory of Mathematic Informatics and ApplicationsUniversitéMohammed V-Agdal.Av.Ibn BattoutaB.P.1014RabatMaroc

A quantum steganography communication scheme via Greenberger-Horne-Zeilinger GHZ 4 state is constructed to investigate the possibility of remotely transferred hidden ***,the multipartite entangled states are become a hectic topic due to its important applications and deep effects on aspects of quantum ***,the scheme consists of sharing the correlation of four particle GHZ4 states between the legitimate *** insuring the security of the quantum channel,they begin to hide the secret information in the cover of *** the scheme with the previous quantum steganographies,capacity and imperceptibility of hidden message are *** security of the present scheme against many attacks is also discussed.

关键词： quantum steganography GHZ4 entangled state quantum cryptography quantum communication

Dynamics of Super Quantum Correlations and Quantum Correlations for a System of Three Qubits

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Communications in Theoretical Physics 2016年第4期65卷 447-452页

作者： F.Siyouri M.el Baz S.Rfifi Y.hassouni Laboratoire de Physique Theorique Departement de Physique Faculte des sciences Universite Mohammed V - AgdalAv. Ibn Battouta B.P. 1014 Agdal Rabat Morocco

The dynamics of quantum discord for two qubits independently interacting with dephasing reservoirs have been studied *** authors [***.A 88(2013) 034304] found that for some Bell-diagonal states(BDS)which interact with their environments the calculation of quantum discord could experience a sudden transition in its dynamics,this phenomenon is known as the sudden *** in the present paper,we analyze the dynamics of normal quantum discord and super quantum discord for tripartite Bell-diagonal states independently interacting with dephasing ***,we find that basis change does not necessary mean sudden change of quantum correlations.

关键词： super quantum discord normal quantum discord Bell-diagonal states measurement strength

Degree of Entanglement and Violation of Bell Inequality by Two-Spin-1/2 States

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Communications in Theoretical Physics 2011年第10期56卷 679-686页

作者： K.Berrada Y.hassouni H.eleuch Institut fr Angewandte Physik Technische Universitt DarmstadtD-64289 DarmstadtGermany Institute for Quantum Studies and Department of Physics Texas University TX 77843USA Laboratoire de Physique Theorique URAC 13 Departement de Physique Faculte des SciencesUniversite Mohammed V-Agdal Av.Ibn BattoutaB.P.1014-AgdalRabatMorocco

Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite *** this paper we examine this inequality and entanglement measures in the construction of the coherent states for two-qubit pure and mixed states,we find a link to some entanglement measures through some new parameters(amplitudes of coherent states).Conditions for maximal entanglement and separability are then established for both pure and mixed ***,we analyze and compare the violation of Bell inequality for a class of mixed states with the degree of entanglement by applying the formalism of Horodecki et al.

关键词： Bell inequality quantum entanglement coherent states pure and mixed states

The Experience of Pain and Anxiety in Cervical Cancer Patients Undergoing Multiple Fraction High-Dose Rate Brachytherapy: A Prospective Observational Study

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Journal of Cancer Therapy 2022年第7期13卷 405-416页

作者： Kenza Benali mohammed Adnane Tazi Gael Kietga Tayeb Kebdani Khalid hassouni Sanaa el Majjaoui Hanan el Kacemi Noureddine Benjaafar Department of Radiation Oncology National Institute of Oncology Rabat Morocco Faculty of Medicine Mohammed V University Rabat Morocco Epidemiology Division Ministry of Health Rabat Morocco

Purpose: To evaluate the anxiety and pain levels of cervical cancer patients undergoing intracavitary multifraction high-dose rate (HDR) brachytherapy, as part of a process to develop guidelines for quality patient-centered care. Methods: Cervical cancer patients (n = 31) undergoingmultiple fraction HDR brachytherapy treatment at the National Institute of Oncology in Rabat (Morocco) completed ratings of pain and anxiety intensity using 11-point verbal analog scales, at 6 key time points over 2 brachytherapy insertion procedures and 4 brachytherapy fractions. Women were evaluated for psychological status at baseline before starting the brachytherapy process using the Hospital Anxiety and Depression Scale (HADS). Scores were grouped as follows: 0 - 7 = normal, 8 - 10 = borderline, 11 - 21 = abnormal. Factors that could affect anxiety levels such as education level, relationship status, number of pregnancies and prior surgical history were documented. Results: Between July and August 2020, 31 women with a median age of 49.6 years were evaluated (range: 27 - 70). The HADS score identified depression in 5 patients (16.1%) and anxiety in 12 patients (38.7%). Throughout both treatment procedures, anticipatory anxiety was reported, with a maximum intensity in the operating room during spinal anesthesia (3.23 ± 1.7) and during applicator insertion (2.97 ± 2.4). Moderate-to-severe anxiety scores were reported in 25.8% and 22.6% of patients respectively. Level of education showed a significant correlation with anxiety scores (p = 0.027). Pain increased significantly during the procedure (p ± 1.4) and applicator removal (4.74 ± 1.5) turned out to be the most painful parts of the procedure. No correlation was found between pain and anxiety levels. Conclusion: Intracavitary multifraction high-dose rate brachytherapy is associated with mild to moderate levels of pain and anxiety, although a subset of patients reported more severe symptoms and may require additional medical and psy

关键词： Cervical Cancer Brachytherapy High-Dose Rate Pain Anxiety

On M-theory on real toric fibrations

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Communications in Theoretical Physics 2021年第8期73卷 67-74页

作者： A Belhaj H Belmahi M Benali S-E Ennadifi Y hassouni Y Sekhmani Equipe des Sciences de la matière et du rayonnement ESMaRDépartement de Physique Facultédes SciencesUniversitéMohammed V de RabatMorocco LHEP-MS Département de PhysiqueFaculte des SciencesUniversitéMohammed V de RabatMorocco

Borrowing ideas from elliptic complex geometry, we approach M-theory compactifications on real fibrations. Precisely, we explore real toric equations rather than complex ones exploited in F-theory and related dual models. These geometries have been built by moving real toric manifolds over real bases. Using topological changing behaviors, we unveil certain data associated with gauge sectors relying on affine lie symmetries.

关键词： real fibrations M-theory toric real manifolds affine lie symmetries

Informational Needs in Women Undergoing Multifraction High Dose-Rate Brachytherapy for Cervical Cancer: A Prospective Qualitative Study

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Journal of Cancer Therapy 2022年第5期13卷 291-303页

作者： Kenza Benali Tayeb Kebdani Khalid hassouni Hanan el Kacemi Sanaa el Majjaoui Noureddine Benjaafar Department of Radiation Oncology National Institute of Oncology Rabat Morocco Faculty of Medicine Mohammed V University Rabat Morocco

Objective: To identify the informational needs of Moroccan women receiving intracavitary brachytherapy for locally advanced cervical cancer as part of a process to develop guidelines for quality patient-centered care. Methodology: A prospective, qualitative study with a phenomenological approach was carried out at the Brachytherapy unit of the National Institute of Oncology in Rabat, Morocco. Purposive sampling was used to recruit 31 patients undergoing high dose-rate brachytherapy for cervical cancer from July 2020 to August 2020. Semi-structured, one-to-one interviews were conducted by a female radiation oncologist in Arabic, guided by a theme list. The interviews were translated and a thematic analysis was performed. Results: Data saturation was achieved having interviewing 31 participants, aged 27 - 70 years. Findings on patients’ informational needs were the overarching theme and form the focus of this article. The informational needs included: providing patients with disease- and treatment-related information in their home language;adequate information concerning pre-treatment preparation, possible side-effects, and sexual intercourse;and providing patients with informative material adapted to their needs as standard procedure. Conclusion: This study has identified unmet women’s informational needs during brachytherapy for cervical cancer. Providing patients with sufficient and understandable information, adequate preparation before the procedure, more sensitive support during the procedure, and debriefing afterward could lessen feelings of fear and anxiety towards treatment delivery. Guidelines with a patient-centered approach could thus be developed to be used as a tool to assist members of multidisciplinary teams in providing quality care to this group of women.

关键词： Brachytherapy Cervical Cancer Informational Needs Qualitative Study

Sarcomatoid Carcinoma of the Mandible: A Case Report and Literature Review

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Journal of Cancer Therapy 2022年第6期13卷 323-330页

作者： Kenza Benali Tayeb Kebdani Khalid hassouni Sanaa el Majjaoui Hanan el Kacemi Noureddine Benjaafar Department of Radiation Oncology National Institute of Oncology Rabat Morocco Faculty of Medicine Mohammed V University Rabat Morocco

Background: Sarcomatoid carcinoma is a rare biphasic malignancy with an epithelial and mesenchymal component. Given its histological particularity, the diagnosis of this tumor still represents a challenge for pathologists and surgeons. Sarcomatoid carcinoma of the mandible is a very rare and aggressive entity. To date, only sporadic cases have been reported in the literature. Aim: To report a rare case of aggressive mandibular sarcomatoid carcinoma treated with radical surgery and adjuvant chemoradiation, and discuss the related literature. Case Report: We introduce a rare case of mandibular sarcomatoid carcinoma occurring in a 34-year-old woman. Treatment consisted of radical surgery and re-excision for positive margins, adjuvant radiation therapy (66 Gy in 33 fractions in simultaneous integrated boost delivered using Volumetric Modulated Arc Therapy) and Cisplatin-based concurrent chemotherapy. The tumor displayed aggressive behavior and high metastatic potential, causing tumour recurrence and extensive lung metastasis. Conclusion: Sarcomatoid carcinoma of the mandible is an extremely rare malignant entity, with a high tendency for local recurrence, distant metastasis. Treatment involves radical surgery and adjuvant chemoradiation, although the outcome and prognosis might be poor.

关键词： Sarcomatoid Carcinoma Mandible Adjuvant Chemoradiation VMAT

Experiences of Women Receiving Multifraction High Dose-Rate Brachytherapy for Cervical Cancer: A Prospective Qualitative Study

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Journal of Cancer Therapy 2022年第6期13卷 311-322页

Objective: The aim of this study was to establish cervical cancer patients’ expectations and experiences during high dose-rate (HDR) intracavitary brachytherapy procedure, as part of a process to develop guidelines for quality patient-centered care. Methodology: A prospective, qualitative study with a descriptive phenomenological approach was used. Purposive sampling was carried out to recruit 31 women undergoing HDR brachytherapy for cervical cancer from June to August 2020 at the National Institute of Oncology in Rabat. Semi-structured, one-to-one interviews guided by a theme list were conducted by a female radiation oncologist in Arabic before, during and after treatment. The following aspects were discussed: expectations, experiences in the waiting room, in the treatment room, and suggestions for improvement. Data was transcribed, translated and thematic analysis performed. Results: Most of the patients felt unprepared and did not have a clear understanding of brachytherapy. Brachytherapy was a difficult experience causing fear and anxiety throughout treatment. Most women dreaded the procedure, before receiving the first treatment and even after having had one. Pain was a major problem for the participants. Some women compared this pain to childbirth, a process they preferred to brachytherapy. Patients agreed that the preventative medication received was not efficient to relieve the pain. Despite these negative experiences, patients were left with a positive outlook. Dialogue with the healthcare professionals, support from their family and fellow patients, envisaged outcomes and desires to heal were used to cope, whilst faith and spirituality gave them strength to endure the procedure. Conclusion: Women undergoing uterovaginal brachytherapy for cervical cancer experience pain and emotional distress. Providing patients with adequate information, more sensitive support during the procedure and debriefing afterwards could lessen feelings of fear and anxiety. Our fi

关键词： Brachytherapy High Dose-Rate Cervical Cancer Qualitative Study Experiences