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Artykuły w czasopismach na temat „Dispersiya”

Autor: Grafiati

Data publikacji: 2 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Əbiyev, T. Q. "İki faktorlu dispersiya analizi vasitəsiylə idman normalarının statistik əhəmiyyət dərəcələrinin qiymətləndirilməsi". Scientific News of Academy of Physical Education and Sport 1, № 1 (2019): 23–27. http://dx.doi.org/10.28942/ssj.v1i1.93.

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Məqalə dispersiya analizi vasitəsiylə ikifaktorlu müntəzəm komplekslərin icra olunma sxeminin təhlilinə həsr edilmişdir. Belə ki, hadisələrin səbəb –nəticə münasibətlərinin tədqiqi zamanı korelyasiya və reqresiya analizi ilə yanaşı həm də dispersiya analizi üsullarından istifadə olunur. Bu üsul təcrübə və ya sınaq prosesində idarə olunan və idarə olunmayan fartorların nəticə əlamətinə təsirini qiymətləndirməyə imkan verir.Aparılan riyazi-statistik hesablamalar nəticəsində atletika idman növlərinin timsalında Azərbaycan Respublikasının Vahid İdman Təsnifatında təsbit olunmuş idman normalarının

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2

Agranovich, Vladimir M., and Yu N. Gartstein. "Spatial dispersion and negative refraction of light." Uspekhi Fizicheskih Nauk 176, no. 10 (2006): 1051. http://dx.doi.org/10.3367/ufnr.0176.200610c.1051.

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3

Khidirov E.A. та Ganbaeva Sh.Ph. "Qadın çanağı formalarından və yaşdan asılı olaraq uşaqlığın və yumurtalıqların morfometrik xarakteristikası". Journal of Theoretical, Clinical and Experimental Morphology 2, № 3-4 (2020): 85–91. http://dx.doi.org/10.28942/jtcem.v2i3-4.127.

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Tədqiqatın məqsədi kiçik çanaq boşluğu orqanlarından olan yumurtalıqların və uşaqlığın morfomerik göstəricilərinin öyrənilməsi olmuşdur. Çanaq ölçülərinin öyrənilməsində olduğu kimi burada da yaş kateqoriyaları tərəfimizdən üç qrupa bölünübdür: gənclik yaşı dövrü, birinci və ikinci yetkinlik yaşı dövrləri. Əldə olunan nəticələrə əsasən demək olar ki, gənclik yaşı qrupunda çanağın normal formalarında uşaqlığın və yumurtalıqların morfometrik parametrlərinin variabelliyi dar çanaq formaları ilə müqayisədə daha yüksək olur. Birinci yetkin yaş dövründə normal və dar çanaq formalarında d

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4

A.N. Ahmadova. "İDMAN NƏTİCƏLƏRİNƏ ƏSASƏN KOMANDALARIN RİYAZİ STATİSTİK ÜSULLARLA MÜQAYİSƏSİ." Scientific News of Academy of Physical Education and Sport 6, no. 1 (2024): 103–7. http://dx.doi.org/10.28942/ssj.v6i1.750.

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Tədqiqatda vurulan qolların sayına əsasən iki futbol komandasının statistik üsullarla müqayisəsi aparılmışdir. Bu məqsədlə futbol komandaların keçirdiyi 10 oyunun nəticələrinə görə orta qiymət, dispersiya, orta kvadratik meyl və variasiya əmsalı hesablanaraq müqayisə aparılmışdı. Nəticədə hansı komandanın digərinə nisbətən daha keyfiyyətli, daha stabil oyun nümayiş etdirdiyinə, eyni zamanda daha hazırlıqlı olmasına qərar verilmişdir.

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5

N.M. Kalantarli and T.Q. Abiyev. "DİSPERSİYA VƏ KORRELYASİYA ANALİZİ VASİTƏSİYLƏ CARİ NƏZARƏT TESTLƏRİNİN ETİBARLIĞININ QİYMƏTLƏNDİRİLMƏSİ." Scientific News of Academy of Physical Education and Sport 4, no. 2 (2022): 5–9. http://dx.doi.org/10.28942/ssj.v4i2.503.

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Məqalə məşq yüklərinin planlaşdırılması üçün vacib olan informasiyanın toplanması və təhlilinə xidmət edən cari nəzarət testlərinin informativliyinin və etibarlığının riyazi-statistik üsullarla qiymətləndirilməsinə həsr edilib. Məşq mikrotsiklində yüklərin tənzimlənməsi məqsədiylə real və planlaşdırılan məşq effektlərinin müqayisə olunma sxemi təhlil edilmişdir. Dispersiya analizinin verilənlərin korrelyasiyasını nəzərə alan üsulunun hesablama modeli əsasında Turbo-Paskal dilində tərtib olunmuş komputer proqramı vasitəsiylə cari nəzarət testlərinin autentliyi təyin edilmişdir.

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6

Xolsaidov, Nuriddin Saʼdulla oʻgʻli. "GIDRODINAMIK DISPERSIYA TENGLAMASINI HAR-XIL AYIRMALI SXEMALARNI QO'LLAB SONLI MODELLASHTIRISH." Educational Research in Universal Sciences 2, no. 5 (2023): 851–58. https://doi.org/10.5281/zenodo.8071550.

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Suyuqlikning harakati turli xil xususiyatlar bilan boshqariladi. Suyuqlik oqimining xatti-harakatlarini yoritish va matematik modelni ishlab chiqish uchun ushbu xususiyatlar fizik va raqamli soha o‘rtasidagi o‘tishni ta’minlash uchun aniq belgilanishi kerak.Doiraviy quvurlardagi oqim uchun konvektiv diffuziya koeffitsientini hisoblash usulini taklif etdi, bu usul eyler kontsentratsiya maydoni uchun turbulent diffuziyaning yarim empirik tenglamasini qo‘llashga asoslangan (laminar oqim holida bu tenglama aniq molekulyar diffuziya tenglamasi bilan almashtiriladi). J.Teylor

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7

Shvartsburg, Aleksandr B. "Dispersion of electromagnetic waves in stratified and nonstationary media (exactly solvable models)." Uspekhi Fizicheskih Nauk 170, no. 12 (2000): 1297. http://dx.doi.org/10.3367/ufnr.0170.200012b.1297.

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8

Feyzullayev, Huseyn. "ƏSAS BECƏRMƏ ÜSULLARININ “QOBUSTAN” YUMŞAQ BUĞDA SORTUNUN DƏN MƏHSULDARLIĞINA VƏ MƏHSULUN STRUKTUR ELEMENTLƏRİNƏ TƏSİRİ." NAKHCHIVAN STATE UNIVERSITY SCIENTIFIC WORKS 1, no. 126 (2024): 167–70. https://doi.org/10.69760/jnsusw.012.

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Sələf, torpaq becərmələri və qidalanma şəraiti fonunda əsas becərmə üsullarının buğda bitkisinin dən məhsuldarlığına və məhsulun struktur elementlərinə təsiri Cəlilabad Bölgə Təcrübə Stansiyasının ərazisində qoyduğumuz 3 amilli (2×3×3) tarla təcrübəsində apardığımız tədqiqatlarda öyrənilmiş və alınan nəticələr məqalədə öz əksini tapmışdır. Tədqiqatlar 2019-2021-ci vegetasiya illərində aparılmaqla standart metodlardan istifadə olunmuşdur. Belə ki, faktiki məhsuldarlıq təcrübədə hər bir lək üzrə birbaşa kombaynla yığılmış dən məhsulunun kütləsinə görə müəyyən edilmişdir. Məhsulun struktur analiz

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9

Sami̇rə Abbasova, Məhəmməd Fərəcov, Sami̇rə Abbasova, Məhəmməd Fərəcov. "REAGENTLƏRİN SEÇİLMƏSİ MƏSƏLƏSİ: NEFT QUYULARINDA ASPO-NUN ƏMƏLƏ GƏLMƏSİNİN QARŞISININ ALINMASI VƏ TƏMİZLƏNMƏSİ." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 48, no. 01 (2025): 224–32. https://doi.org/10.36962/pahtei48012025-224.

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Neft çıxarılması zamanı bəzən arzuolunmayan təbii çökmələrin, yəni asfaltosmoloparafin çökmələrinin (AŞPO) yaranması ilə qeyd olunur. Bu çökmələr, qazma rezervuarların prizaboy sahəsinə, yeraltı hissələrinin divarlarına və neftin yığılması və əmələ gəlməsi sisteminin yerüstü kommunikasiya xətləri ilə düzülüşü yığılmaqla, neft sahələrində istismarına böyük təsir qeyd edə bilir. Təbii çökmələrin əmələ gəlməsi problemi çox zaman mövcuddur və indi də təbii olaraq qalır. Neft yataqlarının müəyyən zaman ərzində istismar təcrübəsindən aydın olur ki, asfaltosmoloparafin süxurları əsasən, parafinlər və

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10

Xolmurotova, Diyoraxon Ibragimovna. "Sirdaryo viloyatining investitsiya muhiti zamonaviy rivojlanish tendensiyalari." Yashil iqtisodiyot va taraqqiyot 2, no. 7 (2024): 7–10. https://doi.org/10.5281/zenodo.13136985.

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Ushbu maqolada Sirdaryo viloyatining investitsiya muhitidagi zamonaviy rivojlanish tendensiyalari, jumladan,infratuzilma rivojlanishi, sanoat o‘sishi, raqamli transformatsiya va inson kapitali rivojlanishiga e'tibor qaratiladi.Tadqiqotda ushbu tendensiyalarning mintaqaviy iqtisodiy o‘sishga ta'sirini tahlil qilish va investitsion jozibadorlikni oshiruvchiasosiy omillar o‘rganilgan. Kesimlik ma'lumotlar to‘plamidan foydalangan holda, iqtisodiy ko‘rsatkichlarga turli rivojlanishtashabbuslarining statistik ahamiyatini baholash uchun dispersiya tahlili (ANOVA) usuli q

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11

Qafar İsmayilov, Hüseyn İmanlı, Qafar İsmayilov, Hüseyn İmanlı, and Rövşən Ələsgərov Rövşən Ələsgərov. "QAZMA MƏHLULLARININ XÜSUSİYYƏTLƏRİ VƏ ONLARA NƏZARƏT." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 41, no. 06 (2024): 510–15. http://dx.doi.org/10.36962/pahtei41062024-56.

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Məqalədə neft-qaz quyularında qazma məhlulları və sementləmə məhlulları kimi istifadə olunan su əsaslı qazma məhlulları üçün yeni məhlul stabilizatorları üzrə tətbiq olunan materiallar təqdim olunur. Təklif olunan materiallar gil suspenziyalarının yaradılması üçün kolloid kimyəvi üsullara, müxtəlif texnologiyalar üçün gil suspenziyalarının dispers fazasının və dispersiya mühitinin mexaniki-kimyəvi aktivləşdirilməsinə, həmçinin gil dispersiyalarının tətbiqi xüsusiyyətlərinin öyrənilməsi metodlarına əsaslanır. Qazma məhlulunda bərk fazanın tərkibi gilin (3-15%) və ağırlaşdırıcının (20-60%) konse

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12

Usmonova, Yulduz isroil qizi. "MAHALLIY HOMASHYOLAR ASOSIDA POLIKONDENSATSION QATRONLARNING SUVLI DISPERSIYA TEXNOLOGIYASI VA ULARNI LOK-BOʻYOQ SANOATIDA ISHLATILISHI". CENTRAL ASIAN JOURNAL OF EDUCATION AND INNOVATION 2, № 6 (2023): 23–24. https://doi.org/10.5281/zenodo.8026131.

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Polikondensatsion qatronlar lok-boyoq sanoatida, ayniqsa yog'och, plastmassa va metallar uchun qoplamalar ishlab chiqarishda keng qo'llaniladi. Biroq, ko'pchilik polikondensatsion qatronlar faqat organik erituvchilarda eriydi, bu ularni qo'llashni qiyinlashtiradi va erituvchilarning toksikligi tufayli atrof-muhit va sog'liq uchun xavf tug'diradi.  

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13

Abduxakimov, Saidaxmat Xazratkulovich, Maftuna G'ofur qizi Abduxakimova, and E'zoza Ulug'bek qizi Nurmanova. "DISKRET EHTIMOLLAR TAQSIMOTI UCHUN HISOBLASH-ALGORITMIK VOSITA: BINOMIAL TAQSIMOT MISOLIDA." Educational Research in Universal Sciences 4, no. 6 (2025): 194–202. https://doi.org/10.5281/zenodo.15426475.

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<em>Ushbu maqolada binomial taqsimotning nazariy asoslari va uning raqamli modellashtirilishi yoritiladi. Muallif tomonidan ishlab chiqilgan dasturiy vosita foydalanuvchiga eksperiment parametrlari — tajriba soni n, muvaffaqiyat ehtimoli p, hamda talab etilayotgan natija k qiymatlarini kiritish imkonini beradi. Dastur ushbu parametrlar asosida binomial ehtimollarni aniq hisoblab beradi, shuningdek, taqsimotning shaklini grafik tarzda vizual ko‘rsatadi. Dastur yordamida kutilayotgan qiymat (matematik kutilma) va dispersiya kabi statistik xarakteristikalar avtomatik tarzda aniqlanadi

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Dinara Hüseynova, Əhməd Muradov, Dinara Hüseynova, Əhməd Muradov. "İŞLƏNMƏNIN SONUNCU MƏRHƏLƏSINDƏ ÇIXARILABILƏN NEFT EHTIYATLARININ QIYMƏTLƏNDIRILMƏSI." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 42, no. 07 (2024): 241–47. http://dx.doi.org/10.36962/pahtei42072024-26.

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Kopıtov, eksponensial və Hubbert modellərindən istifadə etməklə Muradxanlı yatağı üçün çıxarıla bilən neft ehtiyatlarının sürətli qiymətləndirilməsi aparılmışdır. Bütün modellərdən istifadə edərək, işlənmənin əvvəlindən neftvermə əyrisi qurulmuşdur. Sonra neft hasilatı əyrisinin xarakterik kəsimi seçilmiş və nəzərdən keçirilən modellərin əmsalları hesablanmışdır. Bu əmsallar ən kiçik kvadratlar üsulu ilə hesablanmış və arqument kimi kollektorun işlənmə müddəti istifadə edilmişdir. Sonra, hasilat obyektinin inkişaf sistemi dəyişməz qalmaq şərti ilə neft hasilatının uzunmüddətli proqnozu həyata

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15

Mohammad Hadi, Mohammad Hadi, Farokh Marvasti Farokh Marvasti, and and Mohammad Reza Pakravan and Mohammad Reza Pakravan. "Dispersion compensation using high-positive dispersive optical fibers." Chinese Optics Letters 15, no. 3 (2017): 030601–30605. http://dx.doi.org/10.3788/col201715.030601.

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Cheng, Deshu, Lei Zhao, Guoxiang Guan, Huaidong Lai, and Juxiang Luo. "Synthesis of SMA by RAFT polymerization and its dispersion of TiO₂ in aqueous solution." RSC Advances 13, no. 11 (2023): 7366–71. http://dx.doi.org/10.1039/d3ra00637a.

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SMA copolymers with controllable molecular weight (Mn) and narrower dispersity (Ð) were prepared by RAFT polymerization, and the dispersing ability of SMA copolymers with different Mn and Ð for dispersion of TiO2 in aqueous solution was studied.

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Hu, Guangkai, Xiaorui Zhang, Lizhu Liu, Weng Ling, and Weiwei Cui. "Study on inert solvent for preparation based on GO/EP composite." Pigment & Resin Technology 48, no. 2 (2019): 178–84. http://dx.doi.org/10.1108/prt-06-2018-0051.

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PurposeThe dispersity of graphene oxide (GO) has an important effect on the properties of epoxy resin (EP) composites. Many modification and dispersion methods require the use of inert solvents which do not participate in the modification reaction, although GO can be uniformly dispersed in water and alcohol solvents. Based on this requirement, several inert solvents were selected as dispersion solvents to find out the suitable inert solvent for GO dispersion into EP matrix.Design/methodology/approachSeveral inert solvents with different solubility parameters were selected as dispersion solvent

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Arif Süleymanov, Rəsul Xudiyev, Arif Süleymanov, Rəsul Xudiyev. "NEFTÇIXARMANIN TEXNOLOJI PROSESLƏRINDƏ NANOTEXNOLOGIYANIN TƏTBIQININ TƏHLILI." PAHTEI-Procedings of Azerbaijan High Technical Educational Institutions 38, no. 03 (2024): 409–19. http://dx.doi.org/10.36962/pahtei38032024-409.

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Nanotexnologiya sahəsi əsas problemlərin həllində və qazma işlərinin səmərəliliyinin artırılmasında vəd göstərmişdir. Neft və qaz quyularının qazılması əməliyyatları zamanı qarşıya çıxan çətinliklərə və kreativ həll yollarına tələbata ümumi baxış müzakirələri açır. Bu icmal nanotexnologiyanın neft sənayesini necə dəyişdirdiyini və bütövlükdə performansı necə artırdığını araşdırır. Neftin daha yaxşı çıxarılması üçün nanotexnologiyadan istifadənin qiymətləndirilməsi, real vaxt rejimində monitorinq, innovativ materiallar, qazma məhlulları və layların xarakteristikası bu icmalda geniş şəkildə müza

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Fikrət Yusubov, Fikrət Yusubov. "ƏYLƏC KÜNDƏSİ MATERİALLARININ SÜRTÜNMƏ PROSESİNİN ANOVA VASİTƏSİLƏ STATİSTİK ÖYRƏNİLMƏSİ." ETM - Equipment, Technologies, Materials 18, no. 06 (2023): 44–51. http://dx.doi.org/10.36962/etm18062023-44.

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Təqdim olunan araşdırma ovuntu metallurgiya metodları vasitəsilə hazırlanmış kompoziya materialların sürtünmə prosesinin öyrənilməsinə həsr edilmişdir. Tədqiqat obyekti olaraq tərkibinə az miqdarda metal hissəcikləri qatılmış polimer əsaslı friksion materiallar götürülmüşdür. Nümunələri hazırlamaq üçün ənənəvi ovuntu metallurgiya metodları sxeminə daxil olan texnoloji addımlar gözlənilmişdir. Həm ovuntuların xırdalanması, həm də hissəciklərin ölçülərinin maksimum səviyyədə eyni ölçü və formaya gətirilməsini təmin etmək üçün laboratoriya dəyirmanında xırdalanmışdır. Sonrakı mərhələlərdə müavafi

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Yue, Zhang, and Mei Yan Yu. "Dispersive Behavior of Carbon Nanotubes in Aqueous Solution." Advanced Materials Research 744 (August 2013): 293–96. http://dx.doi.org/10.4028/www.scientific.net/amr.744.293.

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Carbon nanotubes (CNTs) were dispersed in aqueous solution with the inorganic compounds (H3O40PW12and H3BO3) by ultrasonic agitation. The dependency relationship between the inorganic solution concentration and CNTs dispersity was investigated by spectrophotometry. The results show that H3O40PW12and H3BO3can promote CNTs dispersion in aqueous solution. CNTs disperse very well in the appropriate concentration. The optimal concentration of H3O40PW12solution is 2mg/mL, and the optimal concentration of H3BO3solution is 4mg/mL. CNTs static stability in H3BO3solution is better than that in H3O40PW12

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Xu, Jinglu, Jihu Wang, Shaoguo Wen, et al. "Preparation and Dispersion Performance of Hydrophobic Fumed Silica Aqueous Dispersion." Polymers 15, no. 17 (2023): 3502. http://dx.doi.org/10.3390/polym15173502.

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Hydrophobic fumed silica (HFS) is a commonly used rheology additive in waterborne coatings. A series of experiments were conducted on the HFS-dispersing technology in this study. The size and structure of HFS primary particles were observed via transmission electron microscopy (TEM). The measurement results of the TEM were D50 = 13.6 nm and D90 = 19.7 nm, respectively. The particle size and dispersion performance of HFS were tested via dynamic light scattering (DLS). Additionally, the HFS aqueous dispersion was prepared and compounded with waterborne polyacrylic latex and polyurethane resin. T

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Grewal, Manjit Singh, Hiroya Abe, Yasutaka Matsuo, and Hiroshi Yabu. "Aqueous dispersion and tuning surface charges of polytetrafluoroethylene particles by bioinspired polydopamine–polyethyleneimine coating via one-step method." Royal Society Open Science 8, no. 8 (2021): 210582. http://dx.doi.org/10.1098/rsos.210582.

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We propose a surface modification of poorly dispersive polytetrafluoroethylene (PTFE) particles via bioinspired polydopamine–polyethyleneimine (PDA–PEI) which conferred PTFE particles a uniform dispersion in aqueous medium. With increasing dopamine concentration in the reaction solution, dispersity of PTFE particles improved and the surface charges of particles changed from negative to positive due to an increase of surface coverage of PDA–PEI layers. Simplicity of the method here outlines an attractive route for surface modification of inert surfaces useful for large-scale applications.

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Chen, Lijun, Zhongbin Bao, Zhengrong Fu, and Wen Li. "Preparation of pigment dispersion resin and stable colour paste." Pigment & Resin Technology 44, no. 4 (2015): 193–97. http://dx.doi.org/10.1108/prt-10-2014-0088.

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Purpose – The purpose of this research is to prepare a dispersion resin with good dispersity and a colour paste with good stability. At present, the colour paste is being prepared using the pigment dispersion resin which has the group quaternary ammonium. The dispersion resin prepared has good dispersity of pigment and extender. However, the stability of storage and construction of the colour paste is relatively poor, which has a negative influence on the application of cathodic electrodeposited (CED) coatings. However, the detailed investigation on the dispersion resin and the stable colour p

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Ramos, Héctor M., and Miguel A. Sordo. "Dispersion measures and dispersive orderings." Statistics & Probability Letters 61, no. 2 (2003): 123–31. http://dx.doi.org/10.1016/s0167-7152(02)00341-3.

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Davis, P. M., T. C. Atkinson, and T. M. L. Wigley. "Longitudinal dispersion in natural channels: 2. The roles of shear flow dispersion and dead zones in the River Severn, U.K." Hydrology and Earth System Sciences 4, no. 3 (2000): 355–71. http://dx.doi.org/10.5194/hess-4-355-2000.

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Abstract. The classical one-dimensional advection-diffusion equation (ADE) gives an inadequate description of tracer cloud evolution in the River Severn, U.K. A solute transport model incorporating the effects of tracer storage in dead zones is presented in which the channel is conceived as being divided into two parallel regions. The bulk flow region occurs in the central part. Its longitudinal dispersive properties are described by the ADE. Adjacent to this, an additional cross-sectional area is defined in which tracer can be stored temporarily in regions of slowly moving water called dead z

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Abed, Abdulkareem H. "Estimation of Dispersion Phenomena for Selected Sites in Babylon Governorate." Journal of University of Babylon for Engineering Sciences 26, no. 7 (2018): 95–111. http://dx.doi.org/10.29196/jubes.v26i7.1491.

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This investigation is conducted to estimate the dispersion phenomena for selected sites in Babylon governorate (ALkheder – Almossiab, ALsadda, ALbunafaa, ALhashmia,). The main aim of this investigation is to study dispersion phenomena, and identification and classification of soils to (high, intermediate, and non-dispersion) depending on special test methods in dispersion phenomena. The experimental tests that were done; indexes, physical, and chemical tests to natural soils and special tests were done to the identification and classification of dispersion soils. The results of cru

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Guedes, Mafalda, Alberto C. Ferro, and José Maria F. Ferreira. "Stabilisation of CuO Aqueous Suspensions." Materials Science Forum 514-516 (May 2006): 1369–73. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1369.

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Obtaining ceramic bodies with enhanced mechanical properties via colloidal processing requires efficient dispersion of the ceramic powders. In this work, the dispersive effect of three low molecular weight quaternary ammonium hydroxides with different alkyl groups upon stabilisation of CuO aqueous suspensions is studied and compared with that of Tiron, a compound based on the benzene molecule. The purpose is to illustrate the effect of molecular structure, size and charge location upon dispersing effectiveness. To access these parameters, rheological and electrophoretic measurements using bot

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Montazeri, Arash, Alireza Khavandi, Jafar Javadpour, and Abbas Tcharkhtchi. "An Investigation on the Effect of Sonication Time and Dispersing Medium on the Mechanical Properties of MWCNT/Epoxy Nanocomposites." Advanced Materials Research 264-265 (June 2011): 1954–59. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.1954.

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This work studied the effect of sonication time and dispersing medium on the dispersion state of 0.1%wt multi-wall carbon nanotube (MWCNT) in the MWCNT/epoxy nanocomposite system. Epoxy, hardener, and epoxy/solvent were used as dispersing mediums in this study. Tensile strength, strain at failure, Young's modulus and fracture toughness were measured under different dispersion state of MWCNT. The results indicate that with the increase in sonication time, initially there was an increase in tensile strength and fracture toughness values which was followed by a drop in values at longer sonication

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29

Liu, Jie, Pan Chen, Zheng Lu, and Hailin Yao. "Experimental Study on the Modification Mechanisms of Dispersive Soil Treated with Hydroxyl Aluminum." Geofluids 2022 (June 23, 2022): 1–13. http://dx.doi.org/10.1155/2022/2680516.

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Dispersive soil is a special clay that is easy to disintegrate and disperse into particles and suspend in water, which can easily cause erosion and piping damage of dams, grooves, and road slopes. In this study, a new dispersive clay modifier hydroxyl aluminum (a positively charged aluminum hydroxide electrolyte) was proposed. Previous studies have shown that it can well coat montmorillonite in clay and combine with it to stabilize the properties of clay. The modification effect and interaction mechanism of hydroxyl aluminum on dispersive soil were studied through indoor dispersion discriminat

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30

Barrios, Richard A. "Estudio de la radiación de fuga generada en el cabezal de un acelerador lineal." Revista Ingeniería UC 28, no. 2 (2021): 274–81. http://dx.doi.org/10.54139/revinguc.v28i2.26.

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Fueron estudiadas las características de la radiación de fuga de un acelerador lineal. Se ejecutó un proceso de simulación empleando el programa de simulación Montecarlo PENELOPE Ver. 2006, se almacenaron los valores de la energía, la posición y la dirección de las partículas en un archivo de espacio de fases. Fueron seleccionadas las energías 6, 12 y 18 MeV y la fuente de partículas, la lámina dispersora, el filtro, la cámara de ionización y el sistema colimador de wolframio. Para el análisis se empleó estadística inferencial. Los resultados muestran que los ángulos de dispersión asociados a

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31

Truhlar, Donald G. "Dispersion Forces: Neither Fluctuating Nor Dispersing." Journal of Chemical Education 96, no. 8 (2019): 1671–75. http://dx.doi.org/10.1021/acs.jchemed.8b01044.

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Chen, Renjie, Shirui Luo, Dan Xie, Yangxin Yu, and Lan Xiang. "Highly Dispersive Palladium Loading on ZnO by Galvanic Replacements with Improved Methane Sensing Performance." Chemosensors 10, no. 8 (2022): 329. http://dx.doi.org/10.3390/chemosensors10080329.

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Methane detection is important for the safety of production and life. Metal oxide semiconductor (MOS) methane detection is a mature and widely used technology but still experiences problems such as unsatisfying low-temperature sensing performances. In this study, ZnO/Pd with Pd nanoparticles of different diameters was prepared to study the influence of Pd dispersion on CH4 sensing properties. Results showed that CH4 sensing enhancements were positively correlated with the dispersity of Pd. Moreover, by galvanic replacement using Ag as the sacrificial template, a highly dispersive loading of Pd

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Meng, Jin Feng, Jia Guang Meng, Lin Mei Zhang, and Ling Ling Ding. "Dispersion of Nano Self-Cleaning Finishing Agents about Suit Fabric." Materials Science Forum 852 (April 2016): 356–61. http://dx.doi.org/10.4028/www.scientific.net/msf.852.356.

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A practical nanopowders dispersion process is designed in order to solve self-cleaning finishing agent reunion.Seven kinds of typical dispersing agent are used for dispersing nanopowders. nanoTiO2-doped ZnO composite powders are chosed as raw material, polysodium acrylate as dispersant, nanopowders are effectively dispersed to get a self-cleaning finishing agent with a uniform dispersion, the average particle size at about 30-40 nm . By orthogonal test, optimum dispersion process conditions were: nanoTiO2 / ZnO powders 1 g / L, polysodium acrylate dispersant 1 g / L, dispersion methods were sh

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Bao, Shuo Chao, Qing Wang, and Xin Hua Bao. "Study on Dispersive Influencing Factors of Dispersive Soil in Western Jilin Based on Grey Correlation Degree Method." Applied Mechanics and Materials 291-294 (February 2013): 1096–100. http://dx.doi.org/10.4028/www.scientific.net/amm.291-294.1096.

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The study on dispersion mechanism of dispersive soil has attracted attention in water conservancy project. In order to investigate the main dispersive influencing factors of soil, grey correlation degree method was used to analysis the relation between dispersion degree and exchanging sodium percentage, clay particles content, organic matter, PH, specific surface area, structure damage rate, cation exchange capacity. The results show that the cation exchange capacity and exchangeable sodiuma do the best contribution to the dispersion of soil, and the specific surface area and the structure dam

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35

Liang, Xiaoning, and Wei Li. "Investigation of Surfactant Type, Dosage and Ultrasonication Temperature Control on Dispersity of Metal-Coated Multi-Walled Carbon Nanotubes." Journal of Nanoscience and Nanotechnology 16, no. 4 (2016): 4224–32. http://dx.doi.org/10.1166/jnn.2016.12711.

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We studied the dispersity of multi-walled carbon nanotubes (MWNTs) combined with different metallic particles (Ni and Fe). An ultrasonic-assisted water-bath dispersion process was used to disperse the metal-coated MWNTs in different solutions and the dispersity was measured using an ultraviolet-visible spectrophotometer. The dispersity and morphology of the MWNTs were characterized using field-emission scanning electron microscopy (FE-SEM) together with digital image processing technology. Effects of dispersant type (sodium dodecyl benzene sulfonate (SDBS), oleic acid, and polymer (TNEDIS)) an

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36

Tang, Min, Yun Liang, and Jian Hu. "The Impact of Fiber Dispersion on Filtration and Tensile Properties of Glass Fiber Filter Paper." Journal of Engineered Fibers and Fabrics 11, no. 4 (2016): 155892501601100. http://dx.doi.org/10.1177/155892501601100401.

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Air quality control has become increasingly important in many industrial areas. Glass fiber filter paper is widely used for the collection of airborne particulate matter. Since glass fiber is fragile, fiber dispersion is believed to be important for controlling filter paper properties. In this paper, the impact of fiber dispersion on filtration performance and tensile properties was studied. Two types of glass fiber filter paper prepared from six different dispersing methods were used to analyze the impact of dispersion on filtration and tensile properties. Rotational viscosity was used to cha

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37

Panjami, K., and Sankar G. "Evaluation of dispersive nature of soil in the piping affected regions of Kerala." Journal of Applied Science, Engineering, Technology and Management 1, no. 02 (2023): 17–22. http://dx.doi.org/10.61779/jasetm.v1i2.5.

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The soil piping erosion has been closely related to the soil composition and its dispersive nature. The phenomenon of dispersivity is explained by the property by virtue of which the soil breaks down into their component particles upon exposure to water. Dispersive soils are highly prone to erosion. If the soil at top is hard and soft dispersive clays present at bottom, in presence of seepage water, there are chances for piping erosion to occur. These kinds of process are very common in lateritic terrains. In appearance the normal erosion resistant clays are similar to dispersive clays, they a

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38

Li, Gang, Hong Gao, Yan Sheng Li, Ying Wang, and Zhen Shu Nan. "Preparation of Nano-ZnO Dispersive Liquid and its Characteristics Analysis by Ion Exchange Controlled Release Method." Advanced Materials Research 233-235 (May 2011): 2205–9. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.2205.

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The 001×7 type cation exchange resins modified by zinc ion which acted as controlled release suppliers of ions composing crystal reacted with sodium hydroxide, saturated calcium hydroxide and ammonia solution respectively, and nano-ZnO dispersive liquid was preparaed. The result of ultraviolet analyse about the dispersive liquid showed that nano-ZnO dispersive liquid prepared by using saturated calcium hydroxide has higher nano-crystallization degree and better dispersity. The exploring results of temperature and reactive time showed that under 60°C and 16 hours conditions nano-ZnO dispersive

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39

Thonglerth, P., P. Sujaridworakun, and O. Boondamnoen. "Preparation of ZnO Nanoparticles Water-based Dispersion." Journal of Physics: Conference Series 2175, no. 1 (2022): 012029. http://dx.doi.org/10.1088/1742-6596/2175/1/012029.

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Abstract In this work, an attempt was made to stabilize ZnO NPs as water-based dispersion. The dispersing agents used are 3-glycidoxypropyltrimethoxysilane (GPTMS), polyvinyl alcohol (PVA) and oleic acid (OA). These dispersing agents were combined with sodium dodecyl sulfate (SDS) to facilitate better dispersion stability. Different wt% content of modified ZnO NPs such as 0.2, 0.4, 1 and 3% w/v was used at a fixed ratio of ZnO NPs:SDS:dispersing agent. The highest dispersion stability was achieved at 1% w/v content of modified ZnO NP, whereas some precipitate was observed at 3% w/v. The result

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40

Hu, Zheng Xi, and Xiao Hua Jie. "Study on Dispersion of Carbon Nanotubes in Pb-Sn Electroplating Bath." Applied Mechanics and Materials 778 (July 2015): 168–73. http://dx.doi.org/10.4028/www.scientific.net/amm.778.168.

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In order to get homogeneously dispersed carbon nanotubes suspension for composite plating, carbon nanotubes were ball milled for different times and polycyclic acid (PA) was used as dispersant in this work. Sedimentation ratio was calculated by measuring the absorbance of suspensions and friction coefficient of the composite coatings was measured by friction tester. Dispersant content and ball milling time on the dispersive stability of suspension were studied. The dispersion mechanisms were discussed. The results showed that PA could effectively disperse carbon nanotubes in Pb-Sn electroplati

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41

Kochetkova, M. A., I. I. Timofeeva, and A. V. Bulatov. "Dispersive Liquid–Liquid Microextraction of Preservatives for Their Chromatographic Determination in Beverages." Журнал аналитической химии 78, no. 7 (2023): 630–36. http://dx.doi.org/10.31857/s0044450223070095.

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A method of dispersive liquid–liquid microextraction, based on the dispersion of an extractant by the gas phase formed as a result of a phase transition, i.e., the evaporation of a highly volatile nonpolar organic solvent (dispersant) upon heating the extraction,—is developed. The analytical capabilities of the method are shown in the determination of preservatives (sorbic and benzoic acids) in soft drinks for baby food by high-performance liquid chromatography with photometric detection. The extractant and the dispersant for the microextraction of preservatives are chosen a terpenoid and a hi

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42

Zhao, Yan, and Yue Xin Duan. "The Dispersion of MWCNTs within Epoxy by Treatment with Coupling and Dispersing Agents." Materials Science Forum 546-549 (May 2007): 2307–12. http://dx.doi.org/10.4028/www.scientific.net/msf.546-549.2307.

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The dispersion of CNTs (Carbon Nanotubes) within polymer matrix is a big obstruction to restrict the application of CNTs. In this paper, the dispersion of MWCNTs(Multi-walled Carbon Nanotubes) within epoxy resin, which was improved by the coupling agent Volan and dispersing agent BYK, were studied. It showed that the best dispersing result of MWCNTs was obtained by combination treatment of Volan and BYK.

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43

Liu, Yifei, Chaoxin Tang, Henghui Fan, Zhen Zhu, Shoufang Jiang, and Bo Zhang. "Study on the Disintegration Characteristics and Mechanism of Modified Dispersive Soil Based on the C-S-H Synthesis Principle." Sustainability 14, no. 21 (2022): 14370. http://dx.doi.org/10.3390/su142114370.

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Since dispersive soil has the characteristic of dispersing and disappearing when making contact with water, lime, fly ash, and cement are often used to modify dispersive soil in engineering. This often causes environmental pollution. Current studies tend to search for environmentally friendly modification methods. A new Ca−Si-modified dispersive soil method was proposed based on the synthesis principle of calcium silicate hydrate (C-S-H). Pinhole, mud ball, dispersion, and disintegration tests were used to investigate the modification effect and physical, chemical, and microscopic tests were u

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44

Jasim, Mohammed Salim Jasim AL-Taie. "Study Effect Self-Frequency Shift of A Soliton in A Liquid Core Photonic Crystal Fibre." Malaysian Journal of Applied Sciences 7, no. 2 (2022): 64–74. http://dx.doi.org/10.37231/myjas.2022.7.2.335.

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In this study, the dispersion curve family reveals that changing the liquid core fluoro-ethylene increases the dispersion curve and causes the curve to flatten at sugar solution 60% with the second zero dispersion point of the wavelength as the refractive index rises. The two zero dispersion wavelength shifts toward the visible region, and it's clear that Soliton's intensity at the second zero dispersion point is around 10% to 25% of its maximum. These peaks are further subdivided into low amplitude dispersive waves depending on the liquid core used at the anomalous region of the fiber. When a

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45

Wang, Yuemin, Binghui Tang, Ruqing Gong, Fan Zhou, and Ang Chen. "Reconstruction of Water-Filled Pipe Ultrasonic Guided Wave Signals in the Distance Domain by Orthogonal Matching Pursuit Based on Dispersion and Multi-Mode." Sensors 23, no. 21 (2023): 8683. http://dx.doi.org/10.3390/s23218683.

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Ultrasonic guided waves (UGWs) in water-filled pipes are subject to more severe dispersion and attenuation than vacant pipes, posing significant challenges for defect identification and localization. To this end, a novel sparse signal decomposition method called orthogonal matching pursuit based on dispersion and multi-mode (DMOMP) was proposed, which utilizes the second-order asymptotic solution of dispersion curves and the conversion characteristics of asymmetric UGWs in the defect contact stage to reconstruct the dispersive signals and converts the time-domain dispersive signals to distance

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An, Seok Hwan, Ki Yun Kim, and Jea Uk Lee. "Reinforcement of Cement Nanocomposites through Optimization of Mixing Ratio between Carbon Nanotube and Polymer Dispersing Agent." Polymers 16, no. 3 (2024): 428. http://dx.doi.org/10.3390/polym16030428.

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Carbon nanotubes (CNTs), known for their exceptional mechanical, thermal, and electrical properties, are being explored as cement nanofillers in the construction field. However, due to the limited water dispersion of CNTs, polymer dispersing agents like polycarboxylate ether (PCE) and sulfonated naphthalene formaldehyde (SNF) are essential for uniform dispersion. In a previous study, PCE and SNF, common cement superplasticizers, effectively dispersed CNTs in cement nanocomposites. However, uncertainties remained regarding the extent to which all dispersing agents interacted efficiently with CN

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47

Aderogba, Adebayo Abiodun, and Appanah Rao Appadu. "Classical and Multisymplectic Schemes for Linearized KdV Equation: Numerical Results and Dispersion Analysis." Fluids 6, no. 6 (2021): 214. http://dx.doi.org/10.3390/fluids6060214.

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We construct three finite difference methods to solve a linearized Korteweg–de-Vries (KdV) equation with advective and dispersive terms and specified initial and boundary conditions. Two numerical experiments are considered; case 1 is when the coefficient of advection is greater than the coefficient of dispersion, while case 2 is when the coefficient of dispersion is greater than the coefficient of advection. The three finite difference methods constructed include classical, multisymplectic and a modified explicit scheme. We obtain the stability region and study the consistency and dispersion

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Wang, Dan Dan, Bei Qing Huang, Xian Fu Wei, Jiang Hao Liu, and Shuang Liu. "Study on the Dispersity of Black Water-Based Covering Ink." Applied Mechanics and Materials 262 (December 2012): 527–31. http://dx.doi.org/10.4028/www.scientific.net/amm.262.527.

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Dispersity is one of the most important factors that affect the covering property of ink. In order to obtain the black water-based ink with high covering property, study the dispersity of ink, by changing the variety of both pigments and resins, the ratio of pigment to resin, the variety and the content of dispersants to prepare based ink, by testing the diameter size to explore the factors that affect the dispersion of black water-based covering ink. It has been proved that the interaction between different pigments and resins is the key factor that influences the dispersion property of the b

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Dai, Kun Tian, Ying An, Zhi Wei Jiao, et al. "Study on Carbon Nanotube Dispersion Behavior in Epoxy Resin under Synergistic Effect of Continuous Stretching Flow and Ultrasound Oscillation." Key Engineering Materials 717 (November 2016): 14–21. http://dx.doi.org/10.4028/www.scientific.net/kem.717.14.

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In this paper, carbon nanotubes (CNTs) dispersion behavior in epoxy resin under synergistic effect of continuous stretching flow and ultrasound oscillation was studied. A small continuous stretching machine which could provide continuous stretching flow for polymer was designed and manufactured for studying the synergistic effect of continuous stretching flow and ultrasound oscillation on dispersive property. Firstly, the influence of different initial phase angle of dual rotor and mixing time on dispersive property were studied by preparing specimens of CNTs/epoxy resin composite under contin

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50

Zia, Haider. "Maintaining Constant Pulse-Duration in Highly Dispersive Media Using Nonlinear Potentials." Photonics 8, no. 12 (2021): 570. http://dx.doi.org/10.3390/photonics8120570.

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A method is shown for preventing temporal broadening of ultrafast optical pulses in highly dispersive and fluctuating media for arbitrary signal-pulse profiles. Pulse pairs, consisting of a strong-field control-pulse and a weak-field signal-pulse, co-propagate, whereby the specific profile of the strong-field pulse precisely compensates for the dispersive phase in the weak pulse. A numerical example is presented in an optical system consisting of both resonant and gain dispersive effects. Here, we show signal-pulses that do not temporally broaden across a vast propagation distance, even in the

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