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The polycaprolactone diol (PCL diol) was prepared by ring-opening polymerization method, with hydroquinone bis(2-hydroxyethyl) ether as the reactive initiator and ε-caprolactone as the monomer. The polyurethane acrylate (PUA) was prepared with the self-made PCL diol. Then, PUA was used to prepare the ultraviolet curable coatings. The structure and molecular weight of PCL diol was characterized by Fourier transform infrared spectroscopy, gel-permeation chromatography, and hydroxyl value titration. The performance of the cured coating film was characterized by thermogravimetric analysis and scanning electron microscope. The flexibility and hardness of the cured coating film were tested. The results showed that the narrow molecular weight PCL diol was successfully synthesized. The UV curing coating film had the optimal performance with a hardness of 3H, flexibility of 1.5 mm, abrasion resistance of 0.028 g−1, and adhesion of grade 1, all coating films showed good thermal properties.

TEM (Transmission Electron Microscopy) image-based failure analysis is one of the key Physical Failure Analysis (PFA) methods in DRAM (Dynamic Random Access Memory) manufacturing. Noise caused by surface damage or front material will corrupted the small features of defect which increases the difficulty for analyzing it. The system described in this paper is designed to enhance small features and reduce background noise for TEM images. The system is formed by 2-Dimensional Fourier Transformation (2D FT) with orientation and other features detection, Gabor filter and Wiener filter.

Both Galectin 9 (Gal-9)/T-cell immunoglobulin and mucin domain-containing protein 3 (TIM-3) pathway and follicular helper CD4

Godson2H is a complex SoC (System-on-Chip) of Godson series, which is a 117 mm2, 152 million transistors chip fabricated in 65 nm CMOS LP/GP process technology. It integrates a 1 GHz processor core and abundant high or low speed peripheral IO interfaces. To overcome on-chip-variation problems in deep submicron designs, many methods are adopted in clock tree, and PVT detectors are integrated for debug. To meet the low power constraints in different applications, most of state-of-the-art low power methods are used carefully, such as dynamic voltage and frequency scaling, power gating and aggressive multi-voltage design.

The quantum spin Hall (QSH) effect and the quantum anomalous Hall (QAH) effect in Lieb lattice are investigated in the presence of both Rashba spin-orbit coupling (SOC) and uniform exchange field. The Lieb lattice has a simple cubic symmetry, which is characterized by the single Dirac-cone per Brillouin zone and the middle flat band in the band structure. The intrinsic SOC is essentially needed to open the full energy gap in the bulk. The QSH effect could survive even in the presence of the exchange field. In terms of the first Chern number and the spin Chern number, we study the topological nature and the topological phase transition from the time-reversal symmetry broken QSH effect to the QAH effect. For Lieb lattice ribbons, the energy spectrum and the wave-function distributions are obtained numerically, where the helical edge states and the chiral edge states reveal the non-trivial topological QSH and QAH properties, respectively.

A new prepolymer of polyurethane acrylate (PUA) was synthesized from cyclohexanone- formaldehyde resin (CFR) with high hydroxyl value, toluene diisocyanate (TDI) and 2-hydroxyethyl methacrylate (HEMA) by using dibutyltion dilaurate as catalyst via two steps. The result from Fourier transform infrared spectrum (FT-IR) showed that methacrylate group was introduced into the terminal of CFR by using TDI as bridge and curable PUA was obtained. Then, the PUA was cured by using azodiisobutyronitrile as catalyst at 110-130°C for 2h. The resulting product has excellent solvent resistance.

The Godson-3B processor is a powerful processor designed for high performance servers including Dawning Servers. It offers significantly improved performance over previous Godson-3 series CPUs by incorporating eight CPU cores and vector computing units. It contains 582.6M transistors within 300mm2 area in 65 nm technology and is implemented in parallel with full hierarchical design flows. In Godson-3B, advanced clock distribution mechanisms including GALS (Globally Asynchronous Locally Synchronous) and clock mesh are adopted to obtain an OCV tolerable clock network. Custom-designed de-skew modules are also implemented to afford further latency balance after fabrication. The power reduction of Godson-3B is maintained by MLMM (Multi Level Multi Mode) clock gating and multi-threshold-voltage cells substitution schemes. The highest frequency of Godson-3B is 1.05GHz and the peak performance is 128GFlops (double-precision) or 256GFlops (single-precision) with 40W power consumption.

Urea-isobutyraldehyde-formaldehyde (UIF) resin was synthesized from urea, isobutyraldehyde, and formaldehyde using sulfuric acid as a catalyst by one pot method. The effects of molar ratios of isobutyraldehyde to formaldehyde (n(I)/n(F)) and aldehyde to urea (n(A)/n(U)) on the yield, hydroxyl value (vs KOH) and softening point of the resin were investigated. The structure of the resin was characterized by FT-IR, 1H-NMR and 13C-NMR. The results show that when the molar ratio of urea to isobutyraldehyde to formaldehyde (n(U)/n(I)/n(F)) is 1.0/3.0/3.0, the yield UIF resin is 67.1%, and the softening point and hydroxyl value are 88 °C and 37 mg/g, respectively. The FT-IR, 1H-NMR and 13C-NMR results show that the lactam is formed by aminomethylation from urea, isobutyraldehyde, and formaldehyde.

Urea–isobutyraldehyde–formaldehyde (UIF) resins were synthesized using urea, isobutyraldehyde, and formaldehyde; sulfuric acid was used as a catalyst. The effects of molar ratio of urea/isobutyraldehyde/formaldehyde (U/I/F) on the properties of resins were investigated, and the structures of the resins were characterized by FTIR, 1H-NMR, and 13C-NMR. When U/I/F was 1.0/3.6/2.4, the yield of the resin was 76.5%. The softening point and hydroxyl value were 90°C and 32 mg KOH/g, respectively. The FTIR, 1H-NMR, and 13C-NMR results showed that an α-ureidoalkylation reaction occurred between urea and isobutyraldehyde to form a lactam. The UIF resins also contained hydroxyl groups and aldehyde groups; the content of aldehyde groups in the resin increased as the amount of isobutyraldehyde increased.

Godson-3B1500 is an 8-core microprocessor product of Loongson Technology™. It is fabricated in 32nm 10 Cu-layer high-κ metal-gate (HKMG) low-power bulk CMOS, and contains 1.14 billion transistors within 182.5mm2 die area. Through numerous design improvements, Godson-3B1500 is able to support a wide voltage range from 1.0V to 1.3V, at frequencies ranging from 1.0GHz to 1.5GHz, achieving 172.8GFLOPS at 1.35GHz, with nearly 40W power dissipation. This represents a 35% power-efficiency improvement over the previous design, Godson-3B [1].

Godson-2H is a complex SOC of Godson series, which is a 117mm2, 152 million transistors chip fabricated in 65nm CMOS LP/GP process technology. It integrates a 1GHz processor core and abundant high and low speed peripheral IO interfaces. Large scale and extremely strict low power requirements make great challenges in the chip design phase. To meet low power constraints in different application scenarios, most of state-of-art low power methods are carefully adopted. This paper describes the most effective low power design methods used in Godson-2H, which are dynamic voltage and frequency scaling, power gating and aggressive multi-voltage design.

The methods by which damaged rolling element bearings generate vibration at a low speed how that vibratioll may be measured and separated from vibration produced by other mechanical components and how that vibration may be analyzed and interpreted as well as examined for a variety damage locations and operating conditions.