Autor: Feng, Pei - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: High Efficiency Covering Technology for Covered Yarn Production: Controlling the Spandex Yarn Draw Ratio
Wysokowydajna technologia produkcji przędzy oplatanej z zastosowaniem kontroli współczynnika rozciągania przędzy spandexowej
Autorzy:: Feng, Pei
Liu, Dashuang
Yang, Chongchang
Tematy:: tension controlled
elastic fibre
draw ratio
spandex covered yarns
naprężenie kontrolowane
włókno elastyczne
współczynnik rozciągania
przędza pokryta spandeksem; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/233862.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes a new covered yarn system in which the tension of spandex elastic yarn drawing is controlled. By analysing the relationship between the draw ratio and yarn tension, it was verified that the new tension controlled drawing system is feasible and results in yarns of superior quality and process stability.
W pracy zaproponowano nowy system wytwarzania przędzy oplatanej, w którym kontrolowane jest naprężenie rozciągania przędzy elastycznej spandex. Analizując zależność między współczynnikiem rozciągania a naprężeniem przędzy, zweryfikowano, że zaproponowany system ciągnienia z kontrolowanym naprężeniem jest wykonalny i zapewnia wytworzenie przędzy o najwyższej jakości z zachowaniem stabilności procesu.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Distribution of the Polymer Melt Velocity and Temperature in the Spinneret Channel of Bi-component Fibre Melt Spinning: a Mathematical Model
Autorzy:: Feng, Pei
Liu, Dashuang
Zhang, Ronggen
Yang, Chongchang
Tematy:: composite fibre
spinning assembly
velocity field distribution
mathematical model; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/2056290.pdf Link otwiera się w nowym oknie
Opis:: For the stability of composite fibre spinning, the difference in and distribution of the polymer melt velocity during the spinning are among the factors of importance. Based on the basic equation for the control of composite spinning dynamics, boundary conditions are identified and reported in this paper. A mathematical model for the symmetric and asymmetric distribution of the melt flow velocity in the microhole of the spinneret of the composite spinning assembly was developed. The accuracy of the mathematical model was also ascertained. It gives a theoretical basis for the designing of a composite spinning assembly.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Design Of the Tension Mechanism Of a Knotter And Optimization Of the Motion Parameters
Autorzy:: Lan, Jiahao
Feng, Pei
Zhang, Junping
Zhang, Ronggen
Yang, Chongchang
Tematy:: chemical fiber
filament knotting process
knotter
catenary
knotting rate; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Powiązania:: https://bibliotekanauki.pl/articles/2200745.pdf Link otwiera się w nowym oknie
Opis:: Currently, the knotting of chemical fiber filament packages in factories primarily comprises manual operations. It also has a high labor intensity and is subject to artificial subjective factors, due to which it is difficult to guarantee the quality of the finished fiber products. Furthermore, it also significantly restricts the intelligent construction of chemical fiber production. This work employs partially oriented yarn (POY) and full draw yarn (FDY) to develop an automatic knotting device. The catenary theory was used to confirm the state of the yarn and to determine the relevant parameters of the tension mechanism. The results showed that the developed automatic knotting device satisfactorily meets the conditions required for manual knotting. The curve equation that was calculated using the catenary conformations of the yarn state verified that the actual yarn state was consistent with the theory. Moreover, the work provides a theoretical foundation for subsequent mechanism optimizations.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Design Of the Tension Mechanism Of a Knotter And Optimization Of the Motion Parameters
Autorzy:: Zhang, Junping
Feng, Pei
Lan, Jiahao
Yang, Chongchang
Zhang, Ronggen
Wydawca:: Sciendo
Cytata wydawnicza:: Lan, Jiahao, et al. "Design Of the Tension Mechanism Of a Knotter And Optimization Of the Motion Parameters" Fibres & Textiles in Eastern Europe, vol. 30, no. 6, Sciendo, 2022, pp. 12-18. https://doi.org/10.2478/ftee-2022-0048
Opis:: Currently, the knotting of chemical fiber filament packages in factories primarily comprises manual operations. It also has a high labor intensity and is subject to artificial subjective factors, due to which it is difficult to guarantee the quality of the finished fiber products. Furthermore, it also significantly restricts the intelligent construction of chemical fiber production. This work employs partially oriented yarn (POY) and full draw yarn (FDY) to develop an automatic knotting device. The catenary theory was used to confirm the state of the yarn and to determine the relevant parameters of the tension mechanism. The results showed that the developed automatic knotting device satisfactorily meets the conditions required for manual knotting. The curve equation that was calculated using the catenary conformations of the yarn state verified that the actual yarn state was consistent with the theory. Moreover, the work provides a theoretical foundation for subsequent mechanism optimizations.
This research was funded by Fundamental Research Funds for the Central Universities, grant number 2232021D-17 and National Natural Science Foundation of China (Grant Number 52103355).
Dostawca treści:: Repozytorium Centrum Otwartej Nauki

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Skocz do pozycji: 5.

Tytuł:: Research on visible light indoor positioning algorithm based on fire safety
Autorzy:: Li, Mao
Jiang, Feng
Pei, Cong
Tematy:: indoor positioning algorithm
camera
indoor positioning system; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/174338.pdf Link otwiera się w nowym oknie
Opis:: From the perspective of ensuring life safety, combined with the advantages of high-speed time response and energy conservation of white light emitting diodes (LEDs), the visible light indoor positioning algorithm based on fire safety is proposed in the paper. First, the model is designed which needs three LED lights arranged in a straight line and positioned in the geographically north direction on the top of the model. Then, the proposed algorithm is discussed and analyzed when the camera is located at the center of the model and facing north, when the camera is located at the center of the model and the angle is rotated, and when the camera is located at any position of the model, respectively. It can accurately calculate the current position of the camera, its response speed is fast and the positioning accuracy is high. Furthermore, this paper also verifies the practicability and reliability of the algorithm by designing the visible light indoor positioning system based on fire safety rescue in natural environment and smoke environment. The experimental results show that the positioning error does not exceed 0.70 cm in smoke environment.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Acousto-optical coupling in two-dimensional air-slot phoxonic crystal heterostructure cavity
Autorzy:: Zhen-Meng, Ma
Miao, Tian
Lei, Zhang
Pei-Feng, Gao
Tematy:: phoxonic crystal
acousto-optic coupling
surface wave
air-slot; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/58970125.pdf Link otwiera się w nowym oknie
Opis:: Phoxonic crystal is a periodic artificial structure that can manipulate optical and acoustic waves in the same temporal and spatial domain. It has broad application prospect in optical communication, optical mechanics sensor, quantum computations, phoxonic crystal integrated devices and so on. In this paper, we adopt a silicon-based two-dimensional square lattice structure, which can exhibit wide band gap of phonons and photons simultaneously. Then a periodic rectangular structure is introduced on the surface, the effects of the height and width of the rectangle on the optical and acoustic surface wave modes are analyzed. Based on the mode gap effect, a surface heterostructure composed of rectangles with different heights and widths is constructed. Then two identical surface heterostructures are placed face to face with an air slot in the middle, and connected with silicon substrate on both sides, which form an air slot heterostructure cavity. Five phononic cavity modes and three photonic cavity modes are obtained, the acousto-optical coupling rates between phononic and photonic cavity modes are calculated. The results show that the coupling rate between phononic and photonic cavity mode with the same symmetry and maximum overlap is the largest, and the coupling rates between the combination of phononic cavity modes α and β and photonic cavity modes can be adjusted by changing the phase difference φ of modes α and β. In this paper, the finite element method is used to simulate the calculation.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: A Lujiatun-like dinosaurian assemblage from the Jehol Biota of Ningcheng, Inner Mongolia, Northeast China
Autorzy:: Zhang, H.
Yu, D.
Feng, Y.
Pei, R.
Zhou, C.-F.
Tematy:: dinosaur
Jehol Biota
Ningcheng county
Yixian Formation
fossil
fauna composition
Early Cretaceous
Cretaceous
Inner Mongolia
China; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/31341389.pdf Link otwiera się w nowym oknie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Acoustic emission characteristics of deep granite under triaxial cylic loading and unloading
Autorzy:: Pei, Feng
Zhang, Yue-Zheng
Zhao, Ji-Wei
Geng, Jing-Ming
Tematy:: deep granite
acoustic emission
frequency spectrum
precursory feature recognition; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Powiązania:: https://bibliotekanauki.pl/articles/1402362.pdf Link otwiera się w nowym oknie
Opis:: In order to obtain the damage and AE characteristics of deep granite, TAW-2000 electrohydraulic servo rigid testing equipment and PCI-2 acoustic emission acquisition system were used to clarify the relationship between AE characteristics and stress level under conventional triaxial and cyclic loading and unloading. The results show that: AE characteristic parameters such as counts and energy under different confining pressures have good consistency in reflecting cracks growth process, which correspond to the stress level of rock sample; Before the critical failure, the AE amplitude increases significantly and extremely high peak frequency and extremely low peak frequency began to appear; The phenomenon that peak frequency band number increases significantly can be used as the precursor of rock failure; The change trend of characteristic parameters, amplitude and peak frequency band were related to the stress level of rock, and the loading path has little influence on it, which verified the effectiveness of AE precursory feature recognition; FR value decreases continuously with the increase of cyclic stress level and overall trend is downward, which indicated that AE memory gradually decreases as the stress level increases; From the perspective of damage mechanics, the AE characteristics of rock before failure are explained reasonably by the development of damage rate.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Fungal diversity notes 2017-2122 : taxonomic and phylogenetic contributions to freshwater fungi and other fungal taxa
Autorzy:: Bandini, Ditte
Usman, Muhammad
Xiao, Yuanpin
Porcu, Giuseppe
Abeywickrama, Pranami D.
Liu, Jian-Wei
Armand, Alireza
Danteswari, Chalasani
Subramani, Priyadarshini
Casula, Marco
Zhang, Huang
Chen, Li-Jia
Dai, Dong-Qin
Liang, Yu-Shan
Zhao, Hai-Jun
Miller, Steven L.
Dissanayake, Asha J.
Rinaldi, Andrea C.
Wu, Na
Kumar, Shambhu
Martín, María P.
Svantesson, Sten
Kumla, Jaturong
Abdollahzadeh, Jafar
Tennakoon, Danushka S.
Yang, Chun-Lin
Kiss, Levente
Piri Kakihai, Sodabeh
Condé, Thiago O.
Suwannarach, Nakarin
Leonardi, Marco
Cheng, Song-Qi
Kezo, Kezhocuyi
Yu, Fu-Qiang
Shivas, Roger G.
Wang, Fei-Hu
Kabdraisova, Aisulu
Ronikier, Anna
Henkel, Terry W.
Khalid, Abdul Nasir
Yang, Yan-Yan
Gafforov, Yusufjon
Gao, Ying
de Silva, Nimali I.
Mleczko, Piotr
Du, Tian-Ye
Oset, Magdalena
Hyde, Kevin D.
Wen, Ting-Chi
Karunarathna, Samantha C.
Zhang, Jing-Yi
Ren, Guang-Cong
Ma, Jian
Gomdola, Deecksha
Ossowska, Emilia Anna
Yang, Yunhui
Suduri, Leila
Mahadevakumar, Shivannegowda
Mua, Alberto
Mohammadi Hamidi, Leila
Manawasinghe, Ishara Sandeepani
Ronikier, Michał
Li, Yan-Xia
Ferreira, Renato Juciano
Abdel-Wahab, Mohamed A.
Hernandez-Monroy, Abril
Podile, Appa Rao
Liao, Chun-Fang
Aime, M. Catherine
Rossi, Walter
Hashemlou, Esmaeil
Javan-Nikkhah, Mohammad
Lu, Yong-Zhong
Ghosta, Youbert
Jeewon, Rajesh
Gasca-Pineda, Jaime
Senanayake, Indunil Chinthani
Maharachchikumbura, Sajeewa S. N.
Rutkowski, Ryszard
Baseia, Iuri Goulart
Lumyong, Saisamorn
Bundhun, Digvijayini
Liu, Feng
Tian, Xing-Guo
Senwanna, Chanokned
Vaghefi, Niloofar
Gui, Heng
Sun, Ya-Ru
Wei, De-Ping
Chellapan, Naveenkumar
Bashiri, Samaneh
Xu, Rong-Ju
Karpowicz, Filip
Piepenbring, Meike
Chandranayaka, Siddaiah
Kunca, Vladimir
Kukwa, Martin
Han, Li-Su
Shu, Yong-Xin
Chen, Yanpeng
Chaiwan, Napalai
Acharya, Krishnendu
He, Shu-Cheng
Arumugam, Elangovan
de Farias, Antonio Roberto Gomes
Jayawardena, Ruvishika S.
Tan, Yu Pei
Pereira, Olinto L.
Zhao, Qi
Rajwar, Soumyadeep
Leão, Ana F.
Tarafder, Entaj
Velez, Patricia
Murugadoss, Ramesh
Tibpromma, Saowaluck
Sarma, Pullabhotla V. S. R. N.
Sanna, Massimo
Ahmadpour, Abdollah
Kaygusuz, Oğuzhan
Custódio, Fábio A.
Doilom, Mingkwan
Calabon, Mark S.
Singh, Raghvendra
Afshari, Naghmeh
Kosecka, Magdalena
Luo, Zong-Long
Shen, Hong-Wei
Glejdura, Stanislav
Kaliyaperumal, Malarvizhi
Dong, Wei
Vasan, Vigneshwari
Guzow-Krzemińska, Beata
Yang, Yu
Li, Hua
Amirashayeri, Pezhman
Chen, Liu-Huan
Monkai, Jutamart
Tang, Xia
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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