Emergent Kondo Lattice Behavior in Iron-Based Superconductors AFe_{2}As_{2} (A=K, Rb, Cs).

Here, we experimentally study the origin of d-electron heavy fermion (HF) behavior in iron-based superconductors (FeSCs) AFe_{2}As_{2} (A=K, Rb, Cs). Nuclear magnetic resonance on ^{75}As reveals a universal coherent-incoherent crossover with a characteristic temperature T^{*}. Below T^{*}, a so-called "Knight shift anomaly" is first observed in FeSCs, which exhibits a scaling behavior similar to f-electron HF materials. Furthermore, the scaling rule also regulates the manifestation of magnetic fluctuation. These results undoubtedly support an emergent Kondo lattice scenario for the d-electron HF behavior, which qualifies the AFe_{2}As_{2} (A=K, Rb, Cs) as d-electron HF superconductors.

[Repair of severe radiation-induced ulcer].

OBJECTIVE: To explore a method to repair severe radiation-induced ulcer and evaluate its clinical effects. METHODS: From August 1988 to December 1998, 12 cases of severe radiation-induced ulcer were treated by muscular or musculocutaneous flap transfer, which included 1 case of pectoralis major muscular flap, 3 cases of three-lobed transverse rectus abdominis musculocutaneous flap, 2 cases of latissimus dorsi musculocutaneous flap, 1 case of tensor fascia lata musculocutaneous flap, 1 case of longitudinal rectus abdominis musculocutaneous and tensor fascia lata musculocutaneous flap, 1 case of gastrocnemius muscular flap, 1 case of gluteus major musculocutaneous flap, huge filleted musculocutaneous flap from lower limbs in 1 case and from upper limbs in 1 cases. RESULTS: All the flaps survived. Primary healing occurred in 9 cases and secondary healing in 3 cases. The extensive multiple ulcers in 2 cases were repaired with filleted limb musculocutaneous flap, and patients were saved. And in other 3 cases, the chest wall defect as the result of radionecrosis were repaired with simultaneous breast reconstruction. CONCLUSION: Muscular or musculocutaneous flaps have abundant blood supply, they are ideal tissue to fill the cavity and repair the defect, especially in repairing severe radiation-induced ulcers.

[Application of skin and soft tissue expansion in treatment of burn injury].

OBJECTIVE: To evaluate the application of skin and soft tissue expansion in the treatment of deformity due to extensive severe burn injury and repair of severe deep electrical burned scalp and skull with fresh wound. METHODS: From 1988, 83 cases of application of skin and soft tissue expansion were reported. In those patients with deformity due to severe burn of large area and with whole nasal defect, soft tissue expander was used under the forehead skin graft and venter frontalis, followed by reconstruction of nose with the expanded vascularized skin flap and carved cartilago costalis as nasal frame. In patients of severe deep electrical burned scalp and skull with fresh wound, skin and soft tissue expansion were used to repair the wound simultaneously with scalp burn alopecia, anesthetics and antibiotics injected into the extracapsular space of the expander in case of pain and infection. RESULTS: All of the cases were successfully treated with little pain and minimized infection. CONCLUSION: Skin and soft tissue expansion in a safe and reliable measure in the treatment of deformity due to extensive severe burn injury and repair of severe deep electrical burned scalp and skull with fresh wound.

Iron status in women aerobic dance instructors.

This investigation evaluated the iron and nutritional status of 12 highly trained aerobic dance instructors who did not take iron supplements (ANS) and 8 who did (AS). A control group (C) consisted of 10 age matched controls. The aerobic instructors had exercised for approximately 3.8 days/wk, 56 min/session for the past 7 yrs. There were no significant differences among groups for energy intake, carbohydrate, protein, fat, nonheme iron, heme iron, or total iron intake (excluding supplemental iron). But both exercise groups had lower ferritin values than the control group. There was also a significant difference in mean cell volume (MCV), with both exercise groups having greater values than the control group. There were no differences among groups for serum iron, total iron binding capacity, transferrin saturation, hematocrit, or hemoglobin. One in three aerobic dance instructors had serum ferritin values below 12 micrograms.L-1. Results indicate that women exercise leaders have iron profiles that are similar to other groups of female athletes. The increased MCV values suggest runners' macrocytosis or an exercise induced macrocytosis.

[Preliminary study of traditional Chinese medicine-Western medicine treatment of patients with primary liver carcinoma].

In order to improve the therapeutic efficacy for patients with primary liver carcinoma (PLC), the authors treated 30 patients by routine chemotherapy in combination with the immunostimulators Bai Nian Le ( ), levamisole and cimetidine. As a result, the NK activity and percentage of lymphoblast transformation of patients were significantly elevated, expansion of the tumor mass was checked, with clinical conditions obviously improved. So the short term effect of the therapy was satisfactory. The study suggested that Bai Nian Le in combination with levamisole and cimetidine was able to elevate the immune response and therapeutic effect. It may be one of the useful adjuvant therapy for PLC patients.

The use of free flaps in burn patients: experiences with 70 flaps in 65 patients.

A series of 70 microvascular free flaps employed in 65 burn patients is presented. The total survival incidence of the flaps was 87 percent. Satisfactory wound healing was achieved in 80 percent of a total of 54 flaps in fresh burn patients. In the 16 patients with healed burns, flap survival was 100 percent with satisfactory functional and cosmetic results. The cruxes of dealing with difficult fourth-degree burns by using microvascular free flaps and our special considerations about the indications and overall morbidities of the donor site are discussed. This large-series report confirms other occasional reports on the use of free flaps in burn patients. It is our belief that the microvascular free flap is the most expeditious means of dealing with refractory burn wounds, even when more conventional techniques are available. In certain cases, the microvascular procedure is the only method that can salvage an extremity.