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New York-based buyout shop Blue Wolf Capital Partners has acquired Channel Technologies Group, a manufacturer and supplier of piezo-electric ceramics, transducers and complex systems and services. Terms of the deal were not released. Blue Wolf bought the company from Channel Technologies Inc.

Publicly traded Community Health Systems Inc. has acquired substantially all of the assets of Moses Taylor Health Care System, a privately held company based in Pennsylvania. Terms of the deal, which closed January 1, were not released.

Luxembourg's Time and Life has acquired an 8.27% stake in Italian mid-tier lender Banca Popolare di Milano, making it the second largest shareholder after buyout fund Investindustrial, Reuters reported. The news was first reported by market watchdog Consob on Tuesday, Reuters wrote.

Buyout shop HarbourVest Partners has promoted David Atterbury to the post of managing director, and promoted ten other individuals to principal and vice president. In Europe, Carolina Espinal de Carulla, Claudio Siniscalco and Hannah Tobin have been promoted to Principal; and Craig MacDonald has been promoted to Vice President. In Asia, Tim Flower has been promoted to Principal; and Kelvin Yap and Maggie Chan have been promoted to Vice President. And in the U.S., Ian Lane and Aris Hatch have been promoted to Principal; and McComma Grayson has been promoted to Vice President.

Lawrence Atinsky, a partner at venture firm Ascent Biomedical Ventures, has joined the board of directors of FluoroPharma Medical, the company announced Friday. Before joining Ascent Biomedical, Atinsky was an attorney at Skadden Arps where he specialized in mergers and acquisitions. FluoroPharma is focused on development of proprietary PET imaging products to evaluate cardiac disease. The company is based in Boston, and traded on the over-the-counter Bulletin Board.

Private equity-backed Presidio Inc. has completed its acquisition of INX Inc. Terms of the deal were not released. Going forward INX will operate as a subsidiary of Presidio Networked Solutions. Presidio is owned by middle-market buyout shop American Securities.

Artisan Partners Asset Management Inc., a Milwaukee, Wisc.-based investment firm, has withdrawn plans for an initial public offering, citing unfavorable market conditions, Reuters reported. In April, the investment management firm had filed with the U.S. Securities and Exchange Commission for an IPO of up to $250 million.

Citigroup is selling its retail business in Belgium to Credit Mutuel Nord Europe, Reuters reported earlier this week. Terms of the deal were not released. Citigroup has had operations in Belgium since 1919. The deal is expected to close in the second quarter of 2012.

AMR Corp., the parent company of American Airlines, announced Thursday that its shares will be delisted from the New York Stock Exchange before the market opens January 5. The company filed for Chapter 11 bankruptcy protection a month ago. AMR said that its stock will be suspended from trading because its average closing price fell below the NYSE's continued listing minimum share price of $1 for more than 30 days.

Evercore Partners Inc. has completed its acquisition of a 45% non-controlling interest in ABS Investment Management, the firm announced Thursday. ABS Investment Management is an institutionally focused equity long/short hedge fund-of-funds manager. ABS has offices in Greenwich, Zurich and Hong Kong.