Search Results - "Gao, W.D."

Surface modification of polymer nanofibres by plasma treatment by Wei, Q.F., Gao, W.D., Hou, D.Y., Wang, X.Q.

“…Polymer nanofibres have great potential for technical applications in biomaterials, filtration, composites and electronics. The surface properties of…”
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The Effect of the No Pain Labor and Delivery–Global Health Initiative on Cesarean Delivery and Neonatal Outcomes in China: An Interrupted Time-series Analysis by Drzymalski, D.M., Guo, J.-C., Qi, X.-Q., Tsen, L.C., Sun, Y., Ouanes, J.-P.P., Xia, Y., Gao, W.D., Ruthazer, R., Hu, F., Hu, L.-Q.

“…( Anesth Analg . 2021;132:698–706) The proportion of births by cesarean delivery (CD) has been increasing in China, to an average of 34.6% in 2014, ranging…”
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Addition theorems on the cyclic groups of order p ℓ by Gao, W.D., Thangadurai, R., Zhuang, J.

“…Let p be a prime number and ℓ be any positive integer. Let G be the cyclic group of order p ℓ and let S be any sequence in G of length p ℓ + k for some…”
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Preparation of SiC nanowires with fins by chemical vapor deposition by Guo, J.Z., Zuo, Y., Li, Z.J., Gao, W.D., Zhang, J.L.

“…SiC nanowires with fins have been prepared by chemical vapor deposition in a vertical vacuum furnace by using a powder mixture of milled Si and SiO 2 and…”
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On zero-sum subsequences of restricted size II by Gao, W.D

“…Let G be a finite abelian group of exponent m, and k a positive integer. Let s km ( G) be the smallest integer t such that every sequence of t elements in G…”
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Mathematical Formulations for Stiffness of "8" Shape 3D Composite by Liu, J.H., Pan, R.R., Gao, W.D., Jiang, H.X., Qian, D.N.

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Development of bobbin tracing system based on RFID technology by Liu, J.H., Gao, W.D., Wang, H.B., Jiang, H.X., Li, Z.X.

“…A kind of system used for bobbin quality controlling tracing based on radio frequency identification (RFID) technology is discussed in this paper. The…”
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A Combinatorial Problem on Finite Abelian Groups by Gao, W.D.

“…In this paper the following theorem is proved. LetGbe a finite Abelian group of ordern. Then,n+D(G)−1 is the least integermwith the property that for any…”
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A variant of Kemnitz Conjecture by Gao, W.D., Thangadurai, R.

“…For any integer n⩾3, by g( Z n⊕ Z n) we denote the smallest positive integer t such that every subset of cardinality t of the group Z n⊕ Z n contains a subset…”
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Olson's constant for the group [formula omitted] by Gao, W.D., Ruzsa, I.Z., Thangadurai, R.

“…Let G be a finite abelian group. By Ol( G), we mean the smallest integer t such that every subset A⊂ G of cardinality t contains a non-empty subset whose sum…”
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Olson's constant for the group Zp⊕Zp by Gao, W.D., Ruzsa, I.Z., Thangadurai, R.

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Sequences not containing long zero-sum subsequences by Gao, W.D., Zhuang, J.J.

“…Let G be a finite abelian group (written additively), and let D ( G ) denote the Davenport’s constant of G , i.e. the smallest integer d such that every…”
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Weighted sums in finite cyclic groups by Gao, W.D., Jin, X.

“…In this paper we prove the following result. Let p be a prime, and k a positive integer. Let { w 1,…, w k } be a sequence of k integers such that w 1+⋯+w k≡0 (…”
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AFM and ESEM characterisation of functionally nanostructured fibres by Wei, Q.F., Wang, X.Q., Gao, W.D.

“…Functionally nanostructured fibres were prepared by silver sputter coating at room temperatures. Atomic force microscopy (AFM) and environmental scanning…”
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Two Zero-Sum Problems and Multiple Properties by Gao, W.D

“…In this paper we consider the following open problems: Conjecture0.1.Let S be a sequence of 3n−3 elements in Cn⊕Cn. If S contains no nonempty zero-sum…”
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Addition Theorems for Finite Abelian Groups by Gao, W.D.

“…Let a1, ..., ak be a sequence of elements in an Abelian group of order n (repetition allowed). In this paper, we give two sufficient conditions such that an…”
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Addition Theorems and Group Rings by Gao, W.D.

“…We establish several addition theorems on finite abelian groups by employing a group ring as a useful tool. Among several results the following is proved…”
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Two Addition Theorems on Groups of Prime Order by Gao, W.D.

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