Strongly Enhanced Mass Anisotropy in Monolayer Phosphorene and Field Tunability.

Phosphorene has attracted extensive research interest due to its anisotropic properties with rich tunabilities such as strongly layer-dependent and field-tunable band gaps. Revealing how the electronic structure evolves down to monolayer is critical for understanding its anisotropic properties and field tunability. Here, we report the hitherto unexplored electronic structure of monolayer phosphorene, as well as field tunability in few-layer phosphorene.

Massive nasal bleeding in nasopharyngeal Carcinoma: Incidence, risk Predictors, and survival impact: Running title: Massive nasal bleeding in NPC.

Objective: To investigate the incidence, risk predictors, and survival impact of massive nasal bleeding in newly diagnosed nasopharyngeal carcinoma (NPC) patients who received curative radiotherapy (RT).

Methods: We enrolled 1327 patients with previously untreated, biopsy-proven NPC, and no distant metastasis. There are 957 males and 370 females, with a median age of 47 years.

Light-Field Dressing of Transient Photoexcited States above the Fermi Energy.

Time-periodic light field provides an emerging pathway for dynamically engineering quantum materials by forming hybrid states between photons and Bloch electrons. So far, experimental progress on light-field dressed states has been mainly focused on the occupied states; however, it is unclear if the transient photoexcited states above the Fermi energy E_{F} can also be dressed, leaving the dynamical interplay between photoexcitation and light-field dressing elusive. Here, we provide direct experimental evidence for light-field dressing of the transient photoexcited surface states above E_{F}, which exhibits distinct dynamics with a delay response as compared to light-field dressed states below E_{F}.

Manipulating the symmetry of photon-dressed electronic states.

Strong light-matter interaction provides opportunities for tailoring the physical properties of quantum materials on the ultrafast timescale by forming photon-dressed electronic states, i.e., Floquet-Bloch states.

Light-Induced Ultrafast Glide-Mirror Symmetry Breaking in Black Phosphorus.

Symmetry breaking plays an important role in the fields of physics, ranging from particle physics to condensed matter physics. In solid-state materials, phase transitions are deeply linked to the underlying symmetry breakings, resulting in a rich variety of emergent phases. Such symmetry breakings are often induced by controlling the chemical composition and temperature or applying an electric field, strain, etc.

Ultrafast Carrier Relaxation Dynamics in a Nodal-Line Semimetal PtSn.

Topological Dirac nodal-line semimetals host topologically nontrivial electronic structure with nodal-line crossings around the Fermi level, which could affect the photocarrier dynamics and lead to novel relaxation mechanisms. Herein, by using time- and angle-resolved photoemission spectroscopy, we reveal the previously inaccessible linear dispersions of the bulk conduction bands above the Fermi level in a Dirac nodal-line semimetal PtSn, as well as the momentum and temporal evolution of the gapless nodal lines. A surprisingly ultrafast relaxation dynamics within a few hundred femtoseconds is revealed for photoexcited carriers in the nodal line.

Evolution of the flat band and the role of lattice relaxations in twisted bilayer graphene.

Magic-angle twisted bilayer graphene exhibits correlated phenomena such as superconductivity and Mott insulating states related to the weakly dispersing flat band near the Fermi energy. Such a flat band is expected to be sensitive to both the moiré period and lattice relaxations. Thus, clarifying the evolution of the electronic structure with the twist angle is critical for understanding the physics of magic-angle twisted bilayer graphene.

Survival analyses of different treatment modalities and clinical stage for hypopharyngeal carcinoma.

Objective: We investigated the effects of different treatment modalities and clinical stage for hypopharyngeal carcinoma (HPC) patients.

Methods: Between February 2004 and December 2012, 167 HPC patients were reviewed. We calculated overall survival (OS), progression-free survival (PFS), local failure-free survival (LFFS), regional failure-free survival (RFFS), and distant metastasis failure-free survival (DMFFS) using the Kaplan-Meier method and compared various survival outcomes between definitive chemoradiotherapy (CRT) and surgery-based therapy (SBT).

Pseudospin-selective Floquet band engineering in black phosphorus.

Time-periodic light field has emerged as a control knob for manipulating quantum states in solid-state materials, cold atoms and photonic systems through hybridization with photon-dressed Floquet states in the strong-coupling limit, dubbed Floquet engineering. Such interaction leads to tailored properties of quantum materials, for example, modifications of the topological properties of Dirac materials and modulation of the optical response. Despite extensive research interests over the past decade, there is no experimental evidence of momentum-resolved Floquet band engineering of semiconductors, which is a crucial step to extend Floquet engineering to a wide range of solid-state materials.

A newly designed femtosecond KBeBOF device with pulse duration down to 55 fs for time- and angle-resolved photoemission spectroscopy.

Developing a widely tunable vacuum ultraviolet (VUV) source with a sub-100 fs pulse duration is critical for ultrafast pump-probe techniques such as time- and angle-resolved photoemission spectroscopy (TrARPES). While a tunable probe source with a photon energy of 5.3-7.

Maintenance metronomic chemotherapy for metastatic/recurrent nasopharyngeal carcinoma.

Background: We investigated the survival impact and toxicity of maintenance metronomic chemotherapy in patients with metastatic/recurrent nasopharyngeal carcinoma (met/rec NPC).

Methods: Ninety-eight patients with met/rec NPC were first salvaged by IV cisplatin-based chemotherapy and showed nonprogression disease; then maintenance metronomic chemotherapy for at least 12 months was recommended. We analyzed the treatment outcome between patients who received (n = 51) and did not receive (n = 47) maintenance chemotherapy.

Survival impacts of different nodal characteristics and T-classification in N3 nasopharyngeal carcinoma patients.

Objectives: We investigated the survival impacts of various nodal characteristics and T-classification on nasopharyngeal carcinoma (NPC) patients with the 8th AJCC/UICC staging criteria N3.

Materials And Methods: Pretreatment MRIs from 110 staged N3 NPC patients were reviewed. There were 23 T1, 25 T2, 32 T3, and 30 T4, respectively.

Effects of Epstein-Barr virus viral load and different treatment modality for stage III nasopharyngeal carcinoma.

Background: We investigated treatment results, the effects of different treatment modality, and pretreatment Epstein-Barr virus (EBV) viral load for stage III nasopharyngeal carcinoma (NPC) patients.

Methods: The initial definitive treatment for 356 stage III NPC patients consisted of concurrent chemoradiotherapy (CCRT) or induction chemotherapy plus radiotherapy (IndCT-RT). The pretreatment EBV DNA level separated patients into a high (n = 106) or low (n = 250) viral load (≥ or < 1000 copies/mL) subgroup.

Comparison the clinical outcomes with altered versus conventional fractionated radiotherapy plus concurrent chemotherapy for advanced nasopharyngeal carcinoma.

Background: The purpose of this study was to compare the long-term survivals between altered fractionated and conventional fractionated radiotherapy with the same concurrent chemoradiotherapy (concurrent CRT) for patients with advanced nasopharyngeal carcinoma (NPC).

Methods: We retrospectively reviewed 203 patients with NPC who received radiotherapy (RT) by either a conventional fractionated (70-74 Gy/35-37 fractions/7-8 weeks) or altered fractionated (72-75 Gy/45 fractions/6 weeks) schedule plus the same concurrent CRT.

Results: The patient characteristics between conventional fractionated and altered fractionated groups showed similar distribution.

Computation-Guided Design of a Stimulus-Responsive Multienzyme Supramolecular Assembly.

The construction of stimulus-responsive supramolecular complexes of metabolic pathway enzymes, inspired by natural multienzyme assemblies (metabolons), provides an attractive avenue for efficient and spatiotemporally controllable one-pot biotransformations. We have constructed a phosphorylation- and optically responsive metabolon for the biodegradation of the environmental pollutant 1,2,3-trichloropropane.

Long-term clinical outcome in nasopharyngeal carcinoma patients with post-radiation persistently detectable plasma EBV DNA.

Purpose: To investigate the long-term clinical outcome of nasopharyngeal carcinoma (NPC) patients with persistently detectable plasma EBV (pEBV) DNA after curative radiotherapy (RT).

Results: The post-RT pEBV DNA levels were very lower copy number (median 21, interquartile range 8-206 copies/ml). After long-term follow-up, the relapse rate was 64.

[Intractable facial paralysis treated with different acupuncture and acupoint embedding therapies: a randomized controlled trial].

Objective: To compare the clinical therapeutic effects on intractable facial paralysis among acupuncture, acupoint catgut embedding and PDS embedding.

Methods: Two hundred and seventy-nine patients of intractable facial paralysis were randomized into an acupuncture group, a catgut embedding group and a PDS embedding group, 93 cases in each one. Cuanzhu (BL 2), Yuyao (EX-HN 4), Taiyang (EX-HN 5), Xuanlu (GB 5), Dicang (ST 4), Jiache (ST 6), Quanliao (SI 18), Qianzheng (Extra), Xiaguan (ST 7) and Fengchi (GB 20) on the affected side and bilateral Hegu (LI 4) and Zusanli (ST 36) were selected in the three groups.

[Biography of the outstanding acupuncturist DU Xiao-shan].

Professor DU Xiao-shan 's academic thought and clinical experiences was introduced in this paper. He has noble medical ethics and is fair to the patients without distinction. He has great learning and rich practical experiences, and he specializes in all kinds of common diseases as well as many difficult and complicated cases.

[Facial nerve function index evaluation on deviation of the mouth in intractable facial palsy treated with sticking needle and traction method on three points of the mouth].

Objective: To probe into the effective acupuncture technique for deviation of the mouth in intractable facial palsy.

Methods: One hundred and one cases of intractable facial palsy were randomly divided into an observation group (48 cases) and a control group (53 cases). Cuanzhu (BL 2), Sibai (ST 2), Jiache (ST 6) and Qianzheng (Extra) on the affected side were punctured in two groups.