This paper presents the design, fabrication, and electromagnetic testing of a frequency selective surface (FSS)-based novel hybrid nanocomposite absorber for enhanced electromagnetic absorption. The proposed hybrid absorber consists of an FSS pattern printed over a dielectric substrate backed by aluminum foil, which is integrated together with a customized dielectric nanocomposite sheet. The dielectric sheet comprises the conducting carbon black (CB) nanopowders embedded into the epoxy matrix. The fabricated nanocomposite sheet is first characterized for the effective complex permittivity using the free-space measurement technique, and the measured electromagnetic properties are then used for the design of a hybrid absorber. The proposed hybrid absorber having overall thickness of 2.6 mm shows enhanced −10-dB absorption bandwidth of 3.5 GHz, which is much higher than that of the FSS and CB nanocomposite samples measured individually. The proposed work provides an effective way to combine the absorption properties of FSS with that of a customized dielectric absorber sheet in order to design an efficient hybrid absorber having reduced thickness with enhanced absorption bandwidth for stealth technology and various strategic applications.

Design of Frequency Selective Surface-Based Hybrid Nanocomposite Absorber for Stealth Applications

The bandwidth–thickness tradeoff is fundamental to the design of thin absorbers based on frequency-selective surfaces (FSSs). In this letter, we challenge the common belief that adding a dielectric superstrate will enlarge the bandwidth at the cost of increased thickness. It is first demonstrated using lumped circuit considerations so that a wider relative operating bandwidth can be achieved with a thinner absorber including an impedance-matching cover. By adopting this dielectric superstrate, we further show on the basis of full-wave simulation that the highest bandwidth ratio (BWR) at 10 dB absorption can be increased from 1:3.54 to 1:6.94, with the normalized thickness being reduced from 0.0920 to 0.0906 $\lambda _L$ (including superstrate). Restricted by readily available materials, an experimentally validated design obtains a BWR of approximately 1:5.32 at 10 dB absorption for a figure of merit of 88.26%. This performance is superior to existing designs with more complicated FSS patterns.

Single-FSS-Layer Absorber With Improved Bandwidth–Thickness Tradeoff Adopting Impedance-Matching Superstrate

Frequency selective surfaces(FSS) is a topic of several decades and still attracting interests of researchers in many areas Variation of FSS have been studied by many groups for different applications Whatever, FSS worked with various types of sources have been paid much more attention for its tenability in frequency, bandwidth, and so on In this paper, state of the art on tunable FSS with active stimulations was reviewed

The Active Way of Tunable Frequency Selective Surfaces

Dual inhibition with a T-cell immunoreceptor with immunoglobulin and ITIM domains plus programmed death (ligand)-1 (PD[L]-1) inhibitors, with or without chemotherapy, is an emerging therapeutic strategy in metastatic non-small cell lung cancer (mNSCLC). The STAR-121 (NCT05502237) phase III, global, randomized, open-label study will investigate first-line domvanalimab (anti-TIGIT) and zimberelimab (anti-PD-1) plus chemotherapy versus pembrolizumab plus chemotherapy in mNSCLC with no actionable gene alterations. 

STAR-121: A Phase III Randomized Study of Domvanalimab and Zimberelimab in Combination With Chemotherapy Versus Pembrolizumab With Chemotherapy in Untreated Metastatic Non-Small Cell Lung Cancer With No Actionable Gene Alterations

The design of a frequency selective surface (FSS) screen constructed using a coupling configuration to implement a broadband microwave absorber is presented in this paper. The reflectivity representation recognizes the characterization of the absorber. Simulation and measurement results are presented and analyzed. A coupling FSS screen is introduced in order to obtain a better bandwidth and absorption. The bandwidth with the reflectivity below -10dB could get 5.45-18GHz, compared with the 6.28-18GHz of the absorber with square patches FSS, provided that the thickness of the absorber is 4mm.

Design of broadband microwave absorber utilizing FSS screen constructed with coupling configurations

180O Efficacy and safety of zimberelimab (GLS-010) monotherapy in patients with recurrent or metastatic cervical cancer: A multicenter, open-label, single-arm, phase II study

Zimberelimab is a novel, fully human anti-PD-1 monoclonal antibody with high affinity and selectivity for PD-1.The objective of this study (NCT03972722) was to evaluate zimberelimab, a novel, anti-programmed cell death protein 1 monoclonal antibody, in patients with programmed death ligand-1-positive recurrent or metastatic cervical cancer that had progressed after first- or subsequent-lineplatinum containing standard chemotherapy. 

79P Efficacy and safety of zimberelimab (GLS-010) monotherapy in patients with recurrent or metastatic cervical cancer: A multicenter, open-label, single-arm, phase II study

Objective: To investigate the clinicopathological characteristics, immunophenotype, molecular genetics and differential diagnoses of fibrocartilaginous lipomas which consist of adipose tissue, fibrocartilage and fibrous elements. Methods: The clinicopathological features, immunohistochemical profiles and molecular profiles in six cases of fibrocartilaginous lipomas diagnosed at Foshan Traditional Chinese Medicine Hospital, Fudan University Shanghai Cancer Center, the Fifth Affiliated Hospital of Zhengzhou University and the Fourth Affiliated Hospital of Harbin Medical University from January 2017 to February 2022 were included. The follow-up information, diagnosis and differential diagnoses were evaluated. Results: There were three males and three females with a median age of 53 years (range 36-69 years) at presentation. Tumors were located in the extremities, the head and neck region and trunk; and presented as painless masses that were located in the subcutaneous tissue or deep soft tissue. Grossly, three cases were well defined with thin capsule, one case was well circumscribed without capsule, two cases were surrounded by some skeletal muscle. The tumors were composed of fatty tissue with intermingled gray-white area. The tumors ranged from 1.50-5.50 cm (mean 2.92 cm). Microscopically, the hallmark of these lesions was the complex admixture of mature adipocytes, fibrocartilage and fibrous element in varying proportions; the fibrocartilage arranged in a nodular, sheet pattern with some adipocytes inside. Tumor cells had a bland appearance without mitotic activity. Immunohistochemical analysis using antibodies to SMA, desmin, S-100, SOX9, HMGA2, RB1, CD34, adipopholin was performed in six cases; the fibrocartilage was positive for S-100 and SOX9, adipocytes were positive for S-100, adipopholin and HMGA2; CD34 was expressed in the fibroblastic cells, while desmin and SMA were negative. Loss of nuclear RB1 expression was not observed. Other genetic abnormalities had not been found yet in four cases. Follow-up information was available in six cases; there was no recurrence in five, and one patient only underwent biopsy of the mass. Conclusions: Fibrocartilaginous lipoma is a benign lipomatous tumor with mature adipocytes, fibrocartilage and fibrous elements. By immunohistochemistry, they show the expression of fat and cartilage markers. No specific molecular genetics changes have been identified so far. Familiarity with its clinicopathological features helps the distinction from its morphologic mimics.目的： 探讨由纤维软骨、纤维及脂肪构成的纤维软骨性脂肪瘤的临床病理学特征、免疫表型、分子遗传学改变及鉴别诊断。 方法： 回顾性分析佛山市中医院、复旦大学附属肿瘤医院、郑州大学附属第五医院、哈尔滨医科大学附属第四医院4家医院病理科2017年1月至2022年2月存档的6例纤维软骨性脂肪瘤，对其临床病理特征、免疫表型、诊断、鉴别诊断及预后进行分析。 结果： 6例病例中，男性3例，女性3例，年龄36~69岁，中位年龄53岁。肿瘤发生在四肢、头颈部和躯干，表现为局部缓慢性生长的无痛性肿块，境界清楚，位于皮下或深部软组织内。大体检查，3例有完整的纤维包膜，1例无包膜但境界清楚，2例周边附少许横纹肌组织，肿瘤由灰黄色脂肪组织和混杂的灰白色区域组成，平均直径2.9 cm（1.5~5.5 cm）；镜下观察，瘤组织主要由不同比例的成熟脂肪、纤维及纤维软骨组织构成。纤维软骨呈结节状或片块状，其内可见脂肪细胞；瘤细胞形态温和，未见核分裂象。免疫组织化学显示瘤组织内纤维软骨细胞表达S-100蛋白及SOX9，脂肪细胞表达S-100蛋白、Adipopholin及HMGA2，梭形成纤维细胞表达CD34，但不表达平滑肌肌动蛋白和结蛋白，RB1蛋白表达无缺失，4例暂未发现分子遗传学异常。随访10~51个月，5例无复发，1例仅行活检。 结论： 纤维软骨性脂肪瘤是一种良性的脂肪肿瘤，含有纤维软骨、纤维及脂肪成分。免疫组织化学表达脂肪及软骨标志物，暂未发现特异性分子遗传学改变，熟悉其临床病理学特征有助于与具有相似形态的间叶性肿瘤相鉴别。. 

[Fibrocartilaginous lipoma: a clinicopathological analysis of six cases].

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Design of broadband microwave absorber utilizing FSS screen constructed with coupling configurations

180O Efficacy and safety of zimberelimab (GLS-010) monotherapy in patients with recurrent or metastatic cervical cancer: A multicenter, open-label, single-arm, phase II study

79P Efficacy and safety of zimberelimab (GLS-010) monotherapy in patients with recurrent or metastatic cervical cancer: A multicenter, open-label, single-arm, phase II study

[Fibrocartilaginous lipoma: a clinicopathological analysis of six cases].